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Analysis Of Network Concepts For A Small Accounting Firm
This paper presents an executive summary of network concepts for a small accounting firm. This paper also discusses the vulnerabilities of the
proposed system as well as the devices, services and over–all requirements to make it operational. Furthermore, the specifications of the network
security as well as the procedures that will take place are also expounded in this paper. The purpose of the giving specific details is to give the firm
and users a clear picture of how the system will be implemented. This paper will also determine the feasibility of the system and its expected benefits
for the firm.
Keywords: Network, Network Security, Network Devices, Network Services, Security Measures, Users, Data Theft, Ethics
I. Introduction
Network breaches pose a serious threat to all companies especially to those who are primarily engaged in managing finances of their customers. This
vulnerable industry includes accounting firms, small and big alike. In fact, the biggest security breach in 2014 reported by Target Corporation (an
American retailing company operating in Minnesota and the second largest discount retailer next to Walmart) includes 40 million credit and debit card
number of customers which were stolen during the holiday season [1]. This proves that hackers are majorly concerned with obtaining the financial
information of clients in order to acquire money. Thus, accounting firms are indeed susceptible to network security breaches which is the reason why a
well–tested
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The Steps Of Good Computer Security Operations
Introduction
A successful BC/DR plan has defined steps within the project that must be defined. We need to initiate the project, identify key business processes,
conduct an impact analysis, develop business continuity strategies, identify communication needs, and finally monitor and review the plan.
Mitigating the impact of a disaster be keeping mission critical capability available when needed is key to any BC/DR plan. These plans are often
critical to a company and the company 's business model. There is a significant amount of time, money, and physical resources that go in to a
successful BC/DR plan.
Background and Significance
The steps we take to create a BC/DR resemble the steps of good computer security operations. Threat evaluation, risk assessment, mitigation, and
service priorities, are a few of the computer security operations that directly relate to a good BC/DR plan. When implementing a BC/DR from a
administrative standpoint we see a significant shift in focus from computer security to physical infrastructure, backup and restoration procedure,
staffing, logistical operations, and connectivity. To ensure the system stays operational in a degraded state a business must address the integrity of the
system. Without computer security considerations a BC/DR plan can fail and turn into an unmanageable situation. During a restoration of workstation
in a BC/DR plan, it may be possible to get bad data from a location that was not maintained correctly, which could
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Strong Proactive Information Security Measures
Strong proactive information security measures in an organization could mean the difference between a data breach and normal business. As it stands,
attackers are getting more persistent, better at finding out confidential information, and constantly finding new ways to gain access to internal
networks. In order to meet the rising threat, organizations must be able to defend themselves properly. While standard perimeter defense measures can
accept and deny connections, they lack a strong deterrent to ensure there will be no future attacks. This report focuses on an intrusion technology that
will gather information and use it to recraft a similar attack back to the attacker in hopes that a much stronger message will be sent.
1. Introduction
With cyber–attacks on organizations becoming more frequent, and with the need to keep organizations secure, counter–measures must be taken. While
firewalls can help to prevent attacks, simply dropping packets and declining services is becoming an inefficient message to send to attackers. Taking
existing perimeter defense techniques, like firewalls, and amplifying them to create a new style of device that will respond to attacks is the next step in
firewall technology. With these Offensive Perimeter Devices (OPDs), organizations can fight back. Imagine being able to replicate the attack that is in
progress and use it against the attackers. The OPD will help to eliminate Denial of Service attacks and ultimately keep an organization up
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Firewall Intrusion Detection And Honeypot Using Raspberry Pi
Firewall intrusion detection and Honeypot using Raspberry pi
Submitted in partial fulfillment of the requirements for the degree of Bachelor of Engineering in Computer Engineering
By
Dishant Modi
130170107046
3.2 Schedule Representation.............................................................16 3.2Risk Management........................................................................17
3.2.1Risk Identification...............................................................17
3.2.2 Risk analysis.......................................................................17
3.2.3 Risk planning......................................................................18
4.System Modeling
4.1.Dataflow diagrams...............................................................19
4.1.1.Context Level Diagram................................................19
4.1.2.Level – 1 DFD..............................................................19
4.1.3.Level – 2 DFD..............................................................20
4.2.Use case diagrams ...............................................................20
4.3.Activity Diagrams .................................................................21
4.4.Sequence diagrams ..............................................................22
4.5.Class Diagrams....................................................................23
4.6.System Architecture..............................................................24
5.Configure Raspberry pi......................................................................25
6.Testing.............................................................................................30
7.Conclusion.......................................................................................31
Bibliography and References..................................................................32
Ied. A widely accepted alternative or at least complement to host–based security services is the firewall. The firewall is inserted between the premises
network and the Internet to establish a controlled link and to erect an outer security wall or perimeter. The aim of this perimeter is to protect the
premises network from Internet–based attacks and to provide a single choke
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Network Security Is Important For Protecting Your Computer
Network Security
EET 5720
Daljot Rai
Have you ever surfed the web and received a popup alerting you a threat is detected? If so, you are not alone. This is a very common issue web
browsers and organizations face. In order to resolve or prevent such issues, it is key to learn about the security of your network. Network security is
the protection of networks that help secure files and directories of a computer. It helps protect the user from hackers, virus attacks, misuse and prevents
unauthorized access. The importance of learning and becoming aware of network security is important for protecting yourself and others around you. I
will be discussing the common type of attacks, methods to protect your computer from harm and discuss what the future may hold for network security.
There are many attacks that can be associated with network security, eavesdropping, viruses/malware and Trojans, phishing, IPspoofing attack and
lastly denial of service. Eavesdropping, has two subcategories passive and active. Passive eavesdropping refers to someone listening to a phone call,
or reading a chat email (Daya, Bhavya). Active eavesdropping refers to the hacker physically going in and distressing the conversation (Daya, Bhavya).
This type of attack allows the hacker to steal confidential information. In this circumstance, it is important to have some sort of network security
because having someone listening in on a personal conversation can be detrimental. This can be solved
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Kudler Fine Foods IT Security Report and Presentation –...
Kudler Fine Foods IT Security Report and Presentation – Top Threats CMGT/400 December 2, 2013 Kudler Fine Foods IT Security Report and
Presentation – Top Threats Team B has been commissioned to examine the Kudler Fine Foods' (KFF), frequent shopper, Customer Loyalty Program
that is currently in development. The team has also been asked to direct the system development team to ensure the system is established securely so
that it properly protects company data and customer information throughout all stages of the system development process. In week 2, the team will
examine the Customer Loyalty Program for vulnerabilities in different areas of the system. The study will define the possible threats... Show more
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The first of these threats is Social Engineering. Social Engineering according to Social–Engineer.org (2013), is "the act of influencing a person to
accomplish goals that may or may not be in the 'target's' best interest. This may include obtaining information, gaining access, or getting the target to
take certain action." The employees themselves are the area of the system affected by this threat. Social Engineering exploits their naivety. General
lack of experience in recognizing this type of attack is a major reason for its success. Education on what Social Engineering is and how to recognize
attacks coupled with company policies written, put into place, and enforced to prevent individuals from divulging or even having access to certain
information no matter the scenario is the recommended course of action. Next is Denial of Service. According to Conklin, White, Williams, Davis, and
Cothren (2012), a Denial of Service (DoS) attack is an attack intended to disrupt a system or service from operating normally. The attacker will attempt,
through means of crashing the system, closing out a logged on session, or overwhelming a machine with multiple
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Swot Analysis Of Joubert Network Security
Joubert Network Security firm would like to thank you again for allowing us the time to provide exceptional and efficient security change to your
network. We have conducted an assessment of the current network security and we will provide you with major recommendations for an optimum
security and hardened network.
The very purpose of this report is to find any vulnerability in your network and proposed sound and effective change to mitigate any breach and be as
proactive as possible. A proactive approach will save money and keep your business running. Businesses with hardened systems succeed. As with any
business ignorance will cost millions. The lack of a user education will innocently pave the way for vulnerabilities and hacking.
The methodology used is a penetration testing in your defense system (firewall) and a thorough assessment that will pinpoint issues and find risks.
Hackers use the same methodology to penetrate any back door left open by inexperienced and uneducated users that will open a way for hackers
innocently and lead the way to malware and viruses.
No system is safe from hacking. However, hardened your network against any potential attack will spare your business from breaches and catastrophes.
As a result, we have evaluated and assessed the network security and have found the following results.
First, the existing Smoothwall firewall is an effective open source firewall which provide services for web filtering, VPN, IPS and Email services. IT
also
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Firewall : A Good Firewall
The first line of defense that should be used to use to protect operating systems is a good firewall. Firewall is known to keep intruders from getting
into your network or system. Microsoft defines a firewall as a software program or piece of hardware that helps screen out hackers, viruses, and
worms that try to reach your computer over the Internet ("Firewall: What It Is and How It Works", 2016). In Computer and Information Security, John
Vacca mention that a good firewall or a system that effectively incorporates several security features in one is a better option to protect a system
(Vacca, 2013). Vacca even went on recommending Secure Firewall from Secure Computing being one of the strongest, government trusted and most
secure firewall products available. Diagram 2 – Firewall as a Protection Firewall Advantages There are multiple of advantages that comes with
firewalls, which includes: 1.When dealing with bad packet, a firewall is going from blocking malicious packets that can harm the system and
network. When dealing with firewalls is better to approach a malicious packet by where to block them instead of focusing on whether to block
dangerous packet. A user operating system firewall can be constructed to provide security and protection. In addition, a user can also add protection to
multiple system by adding a network–based firewall. 2.If the network ever gets compromised a System Administrator can be alerted in advanced if the
firewall is properly designed.
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Network Security Is The Procedure Of Computer Or Any...
Network security is the procedure of preventing and identifying unsanctioned use of your computer or any computer on your network. Preventative
measures allow you to stop unauthorized users, also known as "intruders" or "hackers," from accessing your computer system. Detection helps
establish whether or not someone has attempted to break into your system, if they were successful, and what they may have done . The Internet has
grown to give us the ability to shop, pay bills, and create online profiles hence, people and businesses need to make the proper steps to secure their
network. And while you may not consider your communications to be particularly interesting or confidential, its likely that you do not want strangers
reading your... Show more content on Helpwriting.net ...
Furthermore, researchers have developed some newer methods, such as protocol normalization and distributed firewalls but they have yet to be
widely adopted . In addition, because selective data must be able to pass in and out of a firewall in order for the protected network useful, every attack
cannot be stopped by firewalls. Particular emerging technologies, such as Virtual Private Networks and peer–to–peer networking pose more modern
challenges for firewalls .
Like firewalls, if you put intrusion detectors in place as a preventative measure you could be saving your network from security meltdown. Intrusion
detection is when you monitor the happenings of a network itself and investigate possible incidents or impending threats of computer security policies
or acceptable use policies. After you put intrusion detection and prevention systems in place, it mainly focuses on recognizing likely incidents,
recording data regarding them, remediation, and reporting them to security administrators. The remediation process use several response techniques,
which involve the IDPSs hindering the attack itself, altering the security environment (e.g., reconfiguring a firewall), or modifying the attack's content .
Furthermore, organizations use intrusion detection for additional purposes, such as looking for holes in security policies, documenting current threats,
and discouraging other individuals from
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Storage Of The Packet Filtering Essay
1)According to Bergstra and Burgess (2007), static packet filers have a complex network layer. They only examine one packet at any given time.
They also block SNY scans over the network. By only considering one packet at a given time, stateless packet filtering does not stop major attacks
determined by knowing the position of the packet in a given stream of traffic. There is no context applied to the packet during transmission. For
instance, stateless packet filtering cannot protect against denial of service (Do S) attack as it only examines the individual packets, instead of
determining the connection state alongside the related and or unrelated packets. 2) Hinglaspure and Burghate (2014) indicates that since static filers do
not preserve the results after examining the packets, they are unable to relate the current and already examined packets. By only examining some fields
of the Internet and Transport headers, static packet filtering cannot stop the attacks using other packet portions. Hackers are able to fool static firewalls
easily because they are not smart enough. For instance, the filters may not examine attacks that use data field of the application messages, making the
system more disposed to to the external attack. 2)Application proxy severs safeguard the internal clients from some mischievous external servers. They
force all client connections to pass through the proxy that in turn examines the application content of all packets during transmission.
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The Network And The Internet / External Network
As you can see in the diagram a Duel–Homed Gateway Host is placed between the internal network and the internet/ external network. A duel–homed
host can router packets between the two networks that are connected, but usually this function is disabled making it so neither of the two networks can
not communicate with each other, but can communicate with the duel–homed host. However, the duel–homed host can see network traffic that goes
across both internal and external network. A dual–homed host can provide services only by proxying them, or by having users log into the dual–homed
host directly (O'Reilly Building Firewalls [10]). Duel–homed Firewall architectures is used when traffic to the internet is small and it is not business
critical. Also it is used when the network being protected does not contain extremely valuable data. Another firewall architecture that is used in today's
networks is the Screened Host Architecture. It is also called the Screen Host Gateway. A screened host architecture provides services from a host that 's
attached to only the internal network, using a separate router (O'Reilly Building Firewalls). The primary Security feature that is provided with this
architecture is packet filtering which is done by the screening routers used. This type of architecture uses a screening router (like in a single–box host),
but also uses something called a "bastion host" (O'Reilly Building Firewalls). The bastion host is going to sit on the internal network and
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Implementing An Automated Distributed Firewall
Abstract
This paper discusses about implementing an automated distributed firewall in an emulated environment allowing researchers, educators and companies
for research purposes and to experiment a realistic distributed firewall before implementing one in real life. This eliminates the manual configuration of
each firewall which is time consuming and prone to errors and eliminate repeated experiments.
Traditional firewalls are topology restricted and considerer everyone on the inside are trusted and one on the outside is a least potentially an enemy. In
order to overcome the difficulties for traditional firewall the idea of distributed firewall was proposed.
This demonstration will show a platform to automate emulated distributed ... Show more content on Helpwriting.net ...
In the recent years, the threat that faces data and information has been systematically increasing, from viruses to organized gangs that aim to stifle the
operations of information systems, steal crucial information or facilitate leakage of competitive information.
A firewall is a collection of components, interposed between two networks, that filters traffic between them according to some security policy
(Cheswick & Bellovin, 1994). Due to the increase in network attacks and awareness of cyber security firewalls are used not only in companies but
also in home networks. Firewalls are the frontline of defence to secure the networks from security risks and attacks from cyber criminals. Firewalls
filters network traffic based on filtering rules defined by the firewall administrator or admin. Although firewalls protects from network attacks, virus
etc, it depends on the firewall policies defined, if the policies are not defined properly it proposes a security risk and limits the effectiveness of
firewall security. . There are mainly three types of firewalling techniques based on the OSI layer in which the firewall is acting on. They are (1)
packet filters, which inspect each packet passing through them, (2) application Gateways which act on specific applications such as FTP, Telnet etc and
(3) circuit level Gateways, which apply security mechanisms whenever TCP and UDP connections are established. Firewalls have
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Annotated Bibliography On Software Firewalls Essay
CHAPTER 6
EXERCISE 1
SOFTWARE FIREWALLS:
A Firewall basically prevents the private network connected to the internet from being accessed by unauthorized user and therefore handles the traffic
of internet. Hardware and software firewalls are the types of this network security system. It examines the each data in the network and blocks the data
which is not valid and are from unauthorized user. We will discuss here only software firewalls.
Software firewalls:
Software firewall is suitable for the personal computers at home and it is software so it can be easily installed by the user and then user can easily
manage its properties and functions. Thus we can protect our system form the unauthorized access and also from different harmful viruses. There are
further two types of software firewalls:
a.Rule based
b.Non– Rule based
Rule based firewalls include firewalls like Norton personal firewall and Non rule based includes Zone alarm.
Now we will discuss various software firewalls.
Software firewallFunctionalityType of ProtectionCostFeatures
Zone alarmIncludes inbound intrusion detection system, ability to control programs from creating outbound connectionsBlocks dangerous malware and
malicious apps.
Blocks hackers from remotely accessing and controlling your device.
Zone alarm Pro firewall costs $44.95/yearPublic Wi–Fi protection, Privacy protection
Hacker shield, App permission monitor, Anti–Phishing, Anti–malware.
Comodo firewallIncludes antivirus program,
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Benefits Of Using The Internet
Introduction:
In modern society we heavily rely on computers for a number of different reasons whether that be paying bills, shopping online or simply staying in
touch with family and friends. If you take a look around at daily life it is clear to see just how important computers and technology are to us, they
make life easier. One would never have that one day you could do your shopping without having to leave the comfort of your own home, this is just
one of the basic uses of the modern computer.
The fastest growing element of the computer world is the internet, due to this development the internet has now become the main communication
method within the current generation whether that is between people or companies. The internet has a lot of benefits, people and companies can
communicate and connect with others in various locations, therefore companies can take advantage of using the internet network to support their
business, however there are some disadvantages to this method, using the internet heavily to communicate can leave companies and people vulnerable
to cyber–crime such as network attacks, this results in companies taking extreme actions to have the best network security possible and maximise
efforts to protect their network.
A majority of people think that security attacks happen externally, someone outside the company but in fact internal attacks happen more frequent and
are more harmful, Cryptek (2001) based the argument from some articles, "that internal
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Firewall Essay
Introduction:
Ensuring the Windows Network Security and classification of system movement, regardless of whether in the cloud or on–premises, is a basic piece of
any information insurance technique. Securing the system foundation anticipates assaults, piece malware, and shield your information from
unapproved get to, interfered with access, or misfortune. In general society cloud, the confinement of client foundation is basic to looking after security.
Microsoft Azure, on which most Microsoft business cloud administrations are fabricated, fulfills this essentially through an appropriated virtual
firewall, divided neighborhood (LANs), and physical detachment of back–end servers from open confronting interfaces. ... Show more content on
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Divided LANs empower you to isolate movement by sectioning your virtual systems and control how activity goes between various IP subnets.
Multi–level topology empowers you to assign subnets and assign isolate address spaces for various components of your workload. These coherent
groupings and topologies mean you can characterize diverse access strategies in view of workload sorts. Movement separation guarantees that your
virtual machines (VMs) and interchanges stay private inside a virtual system. Cross–premises availability empowers you to build up associations
between a virtual system and different on–premises locales, or other virtual systems in Azure, by utilizing VPN portals or outsider virtual machines.
Access Control Lists are deciding that you can make at various levels of granularity, including system interfaces, individual VMs, or virtual
subnets.When you empower Azure Security Center for your membership or Resource Group, Azure Security Center gives suggestions and alarms to
arrange security issues, with a concentrated entrance from which you can help secure your Azure organizations and avert, recognize, and
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An Effective Network Security Measure
This creates a layered method of protection, in which they have to successfully pass through all layers, making it harder for an attacker to penetrate
network defenses. Based on research a multifactor authentication system is a more secure and harder to penetrate method, great for the energy sector;
making it an effective network security measure.
3.Firewalls
A firewall is an access control security tool used to prevent unwanted access to a network. It is usually the first line of defense and serves sort of
like a gate in which all outside network traffic and internet connections are verified prior to granting access to a private network, making sure it meets
security policies in place (IU, 2013). With a firewall a provider can establish which traffic is acceptable and which isn't and the firewall simply
executes at command, blocking all unrecognized access making the network more secure.
Firewalls originated in the late 1980's getting their name from firefighting and prevention, signifying keeping a fire out (Rouse, 2014). If an attack on
your network occurred it could be compared to a fire which is where the firewall comes in, keeping negative effects out.
Firewalls are said to now be used as a major defense against cyber–attacks.
There are several types of firewalls. The most commonly used are;
Packet filtering firewalls: These were one of the first firewalls used. Their main
function was to monitor the flow of packets from the internet, verifying the
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Information Security
Information Security
As the world migrates to the digital village, a lot of digital data and information is generated and transmitted. In the same line, there is a growing need
for data repositories or data banks. Information security is chiefly concerned about prevention, detection and response to computer threats or risks
(CISCO, 2013). Protecting organizational information and systems is a daunting task because of the emerging and advanced threats to information
technology resources. Securing information technology infrastructure and informational assets is a continuous cycle as advancements in technology
presents a new breed of threats (Hunt, 1998).
In the current business landscape, accounting systems are typically modules of ... Show more content on Helpwriting.net ...
Types of firewalls
According to CISCO (2013), firewalls are categorized into software and hardware types.
Hardware Firewalls and their advantages
Hardware firewalls are specialized network systems that contain specialized software and hardware. When they are configured appropriately, these
firewalls provide a protective barrier that hide an entity's internal computers and applications from the outside world. Hardware firewalls can also shield
organization department; for instance, the human resources from another department such as the finance department. Hardware firewalls are mostly
applicable in scenarios where entities require a unitary information security umbrella with the capability of protecting multiple systems (CISCO, 2013).
This reason points out why most FORTUNE 500 company networks have implemented hardware firewalls. However, since hardware firewalls are
specialized devices or systems, they tend to be complicated, expensive, tricky to configure and difficult to upgrade. That is to say, they are best reserved
for Information Technology experts or consultants trained to assess, install, configure and maintain such systems. In addition, the low–end hardware
firewalls currently found in network devices such as routers and switches for homes and small businesses are also limited to locations. In other words,
if an accountant or any other user from the accounting department takes their mobile devices or laptops to the road, their
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Worldwide Network Security
MARKET ANALYSIS Worldwide Network Security 2012
–2016 Forecast and 2011 Vendor Shares
John Grady
IDC OPINION
The worldwide network security market grew by 6.1% in 2011. The total market, which includes firewall, unified threat management (UTM), intrusion
detection and prevention (IDP), and virtual private network (VPN) solutions, reached $7.4 billion in 2011. UTM revenue saw the strongest growth at
17.4% and reached $2.2 billion. The IDP market saw more moderate growth at 4.5%, reaching $1.9 billion. The firewall segment remained the largest
component of the market at $2.4 billion but grew only a modest 2.9% over 2010. Revenue from standalone VPN solutions fell 5.3% to $0.9 billion.
IDC expects the firewall and VPN segments to remain ... Show more content on Helpwriting.net ...
15 11 Key Forecast Assumptions for the WorldwideNetwork Security Market, 2012–2016 .................. 18 12 Worldwide Network Security Revenue,
2006–2016: Comparison of November 2011 and June 2012 Forecasts.................................................................................................................... 26
©2012 IDC
#235631
LIST OF FIGURES
P 1 2 Worldwide Network Security Revenue by Function, 2007–2016.................................................. 14 Worldwide Network Security Revenue,
2006–2016: Comparison of November 2011 and June 2012 Forecasts.................................................................................................................... 27
#235631
©2012 IDC
IN THIS STUDY
This IDC study examines the worldwide network security market, including firewall, UTM, IDP, and VPN solutions, from 2011 to 2016. It provides
vendor revenue shares and market sizing for 2011 as well as market growth forecasts for 2012–2016.
Methodology
See the Methodology in the Learn More section for a description of the forecasting and analysis methodology employed in this study. In addition,
please note the following: пЃ№ The information contained in this study was derived from the IDC Worldwide Security Appliance Tracker as of
March 30, 2012. пЃ№ All numbers in this document may not be exact due to rounding. пЃ№ For more information on IDC 's definitions and
methodology, see IDC 's Worldwide Security Products
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Why Should Pay Card Security Be An Important Issue For Tom?
Mark Maciasz
Case Study Three
6 March 2016
Case Study Three
Why should payment card security be an important issue for Tom? Restaurants have a tendency to be targets for cyber criminals. These criminals
steal and reconfigure the payment card data for their own purposes. At the Heartland Cafe, Tom has a chance to be a target for a cyber attack by being
in a high–traffic area. If the customer is compromised, Heartland Cafe will quickly lose public trust and perhaps Tom will lose the business altogether.
Extra measures toward risk management should be taken to ensure that the business itself remains safe. Compliance with PCI–DSS protocols, PTS
requirements and the franchisor should inform the franchisee of any software that could translate ... Show more content on Helpwriting.net ...
Tom has been using an outdated system to protect his server. At first, Tom felt that Heartland had no issues withsecurity. Under his own investigation,
Tom proved to himself that his security was strong to the investigators. But the Restron POS software implemented to protect Heartland failed to meet
PCI–DSS or PA–DSS protocols, since Tom had been using an outdated system since 2009. As it turned out, Restron dropped that POS reseller, but Tom
continued to use the POS reseller. The government has increased it's oversight over companies and asked those to comply with basic security
regulations which safeguards computer systems and networks.
Years later, the police arrived to inform him informed of a recent breach in the Heartland Cafe network. Detectives on the scene checked and analyzed
for any possible vulnerabilities, where Tom confessed that his POS reseller, franchisor and POS reseller neglected to tell Tom to conform with the
updated PTS requirements. The investigators learned that Tom's scans originated from a different location and confirmed that the Heartland Cafe was a
victim. While Tom was updating his security measures, he temporarily shut down Heartland Cafe in order to address this issue.
How should Tom view and approach PCI–DSS compliance?
Cyber attacks break the encryption connection and read sensitive personal information, including passwords, credit card numbers, trade secrets, or
financial data. Any communication
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The Security Of A Network
There are many threats today that can compromise the security of a network. Network security is now more important as ever as attacks on networks
that hold valuable information are being breached, even with security measures put in place. One of the biggest threats to a network is data theft.
Outside hackers pose the greatest threat. These thieves target a company's network and steal information through vulnerabilities that they have found
in their networks. They usually gain access through the use of a Trojan horse, which is a program that looks legitimate but can be used by others to
gain access to the network. They may also use a virus or worm, which can infiltrate a network with malicious code and replicate itself in a network.
Others try to gain entry by attempting to crack the network passwords or user accounts. We hear in the news how networks that were supposed to be
secure were breached and information was stolen that could have negative consequences. Yahoo discovered that their network had been attacked
continuously for the past two years but only recently discovered it. Information that was stolen ranged from users birth dates to passwords that were
encrypted (Lien). When a network has been successfully breached and information stolen, the company who has fallen victim to this not only sees their
reputation hurt but also suffer a large drop in their stock prices. This hurts people who may have some shares in that company as many retirement plans
tend to invest
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Essay On Aircraft Solutions
Course Project:
Security Assessment and Recommendations – Phase I & II
Aircraft Solutions
Table of Contents
Executive Summary..............................................................1
Company Overview..............................................................1
Hardware Vulnerability.........................................................2
Policy Vulnerability..............................................................3
Hardware Solution...............................................................4
Policy Solution.....................................................................5
Summary...........................................................................6
Executive Summary
The purpose of this paper is to explore and assess computer security as it relates to Aircraft Solutions. Aircraft Solutions provides products and services
to a range of companies that require highly specialized skills. Information is accessed by internal and external users via their Business ... Show more
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"Security needs to be addressed as a continued lifecycle to be effective. Daily, there are new attack signatures being developed, viruses and worms
being written, natural disasters occurring, changes in the organization workplace taking place and new technologies evolving, these all effect the
security posture in the organization" (King, 2002). This being said, it is important to evaluate firewall and router rule sets more frequently. The
possible threats against this policy include improperly configured network infrastructure which leads to a domino effect that could start with
malicious programming which could end in data loss. Many of these threats may be unintentional as some users may not be aware of the risks and
how their processes and procedures open the door for such attacks. For this reason alone, a more frequent evaluation is needed. This vulnerability
could lead to data loss and the exposure of trade secrets, client lists and product design. The exposure of such information for most companies could
mean a financial collapse as it no longer has the competitive edge that makes it the industry leader. While the likelihood of this threat is very high,
"security risks to the network exist if users do not follow the security policy. Security weaknesses emerge when there is no clear cut or written security
policy document. A security policy meets these goals:
i. To inform users, staff and managers of their obligatory requirements
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IS3220 FINAL STUDY GUIDE
IS3220 FINAL STUDY GUIDE
1.) Know how NetWitness/Wireshark investigator work
Investigator provides security operations staff, auditors, and fraud and forensics investigators the power to perform unprecedented free–form
contextual analysis of raw network data captured and reconstructed
2.) Know what type of information can be detected from a packet header
Control Information
3.) Know how TCP established a connection
To establish a connection, TCP uses a three–way handshake. Before a client attempts to connect with a server, the server must first bind to and listen
at a port to open it up for connections: this is called a passive open. Once the passive open is established, a client may initiate an active open. To
establish a connection, ... Show more content on Helpwriting.net ...
12.) Know the attacks a hacker might perpetrate and how a hacker might make money from the attacks
Eavesdropping, breaking and entering, social engineering, malicious code, session hijacking, man–in–the–middle attacks, wireless hacking, SQL
injections, web site attacks, and more.
13.) Know what in a organization is vulnerable to social engineering
People are the vulnerability
14.) Know how a buffer overflow attack works
Is an anomaly where a program while writing data to a buffer, overruns the buffers boundary and overwrites adjacent memory, this is a special case of
violation of memory safety.
15.) Know what attack types: impersonation, reciprocity, and phishing fall under
Social Engineering Attacks
16.) Know what happens in each of the 7 IT domains
User– defines the people who access an organizations information system.
Workstation– the computer on your desk, this can extend to other devices that provide access to computing resources.
LAN– sub network that is made up of a group of clients plus servers which are under the control of one central security.
LAN–WAN– computing network technologies used to transmit data over long distances between different LANs
WAN– spans a large geographic area.
Systems/Applications– the critical infrastructure of server systems, applications, and data.
Remote Access– accessing the computing services from outside the boundary of the computing
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Technology And Systems Administration Has Prompted...
As indicated by Kizza (2013), the fast development of systems administration has prompted expanded security dangers. A large portion of these dangers
are an aftereffect of hacking, uncalled for employments of system assets and system gadget vulnerabilities. Familiarity with the different shortcomings
and vulnerabilities is fundamental to the achievement of current systems (Kizza, 2013).
The system security occurrences are expanding at an exasperating rate each year. As the multifaceted nature of these dangers expands, so do the
efforts to establish safety required to secure systems. Endeavor server farm administrators and investigators, arrange directors and in addition other
server farm specialists need to comprehend the standards of security so as to securely convey and oversee organizes today.
Defenselessness Assessment
Vulnerabilities
Laurie (2002) characterizes defenselessness as shortcoming that is profoundly installed in each system and gadget and along these lines hard to
evacuate. Such gadgets incorporate switches, workstations, switches, servers and in addition the security gadgets themselves. Vulnerabilities in system
security can be considered as the easy objectives inside each system. These vulnerabilities are available in the whole system framework (LAN
organize, singular gadgets and ISP) that make up the system (Laurie, 2002).
Systems are by and large confronted with all or a portion of the key vulnerabilities or shortcomings to be specific;
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The Firewall Essay
The Firewall
WHAT IS A NETWORK FIREWALL?
A firewall is a system or group of systems that enforces an access control policy between two or more networks. The means by which this control is
accomplished varies widely, but in principle, the firewall is a pair of mechanisms, one that blocks traffic and one that permits traffic. Some firewalls
emphasize blocking traffic, while others emphasize permitting traffic. The most important thing to recognize about a firewall is that it implements an
access control policy. If you don't know what kind of access you want to permit or deny, or you let someone else or some product configure a firewall
based on judgment other than yours, that entity is making policy for your whole organization.
WHY ... Show more content on Helpwriting.net ...
Generally, firewalls are configured to protect against unauthenticated interactive logins from the outside world. This protection, more than anything,
helps prevent vandals from logging on to machines on your network. More elaborate firewalls block traffic from the outside to the inside but permit
users on the inside to communicate freely with the outside. The firewall can protect you against any type of network–borne attack if you unplug it.
Firewalls are also important because they are a single point where you can impose security and auditing. If someone attacks a computer system by
dialing in with a modem, tracing the perpetrator is impossible. In contrast, the firewall can act as an effective phone tap and tracing tool. Firewalls also
provide an important logging and auditing function, summarizing topics such as the kinds and amount of traffic that passed through it and how many
attempted break–ins occurred recently.
WHAT CAN'T A FIREWALL PROTECT AGAINST?
Firewalls can't protect against attacks that don't go through the firewall. Many corporations that connect to the Internet are very concerned about
proprietary data leaking out of the company. Unfortunately, a magnetic tape exports data just as effectively as the Internet. Many organizations whose
management is terrified of Internet connections have no coherent policy about protecting dial–in access via modems. It's silly to build a steel door six
feet thick
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Firewall And The Security Levels
The modern world is being automated in all fields in various aspects. Automation is achieved by the software development and this result in a faster
work accomplishment and also in an easy, efficient way. Meanwhile, this progress has also got proportionate threat of misusing the software. As the
internet has extended its roots providing access to various networks and also may provide access to inappropriate users. So, it is necessary to protect
these networks and this purpose is served by network security. The security levels can be classified into two they are low level security and high level
security. Network security includes many components and firewall is one such component that protects a network from various threats. Everything in ...
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For every firewall there are certain policies or a set of rules which describe the functionality of that firewall. Firewall follows these policies and makes
decision, whether to allow or decline a packet to penetrate through the firewall. So, it is necessary to have a firewall which is subjected to follow a
good set of rules or policies.
Packet Filtering:
Packet filtering is the basic purpose of the firewalls in the network. The key theme of the packet Filtering is that firewall shacks either in the host or in
router and monitors the traffic and flow of the data. The monitoring of traffic in the network is performed with respect to the policies of the network
security (Vadim Zaliva,2008).
Firewall Simulation:
Reproducing the behavior of the firewall is essential, especially in the field of testing of security and the audit for the security. To reproduce a firewall
physically, one has to carry out the pattern of the security policies which are brought forth by the existing firewall and should be placed in the
circumstance of the environment provided by the network. Not only this, simulation of the firewall also needs the construction of the organized model
for the firewall and helping it with the files that consists of the terms and policies (Wool.A,2001).
Policy Optimization is considered to be the most important field of research. Though the soul rules of tend to be very simple but they need to be
correspond with the large chunks of packets
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How Technology Has Changed The Way Of Living Across The World
Corporate Policy and Security
Technology has changed the way of living across the world. Mostly, last 20 years period is a golden era for technology. People have accomplished
several outstanding innovations in the field of technology. Modern technology is becoming very accessible not only for richest and developed city
like New York but also for poor people and least–developed countries across the globe. It is a tremendous achievement in the field of modern
technology. Today, people are no longer have to be on long queue or do long driving to get services from government agencies to the private big
enterprises through small coffee shops. Technology has contributed to make our life easy and fast. However, it has created some major... Show more
content on Helpwriting.net ...
To protect web and data, companies must have a security policy. One of the best policies to protect the company from various vulnerabilities is
password policy. Passwords are the must important element of the computer security. Week password may cause serious damage to the company. It is
a just a similar as given the main door key to the house where the diamond and millions of cash are. So, the main purpose of choosing password
policy is to set–up a standard for everybody to give a strong password. It will set–up the standard protocol to setup and handle the passwords of every
individual that are related to the company including all users including contractors.
These are the password policy steps must follow by everyone.
вћўAll system–level passwords must be changed on at least a quarterly basis
вћўAll production system–level passwords must be part of the global password management database.
вћўAll users–level passwords must be changed at least every six months.
вћўUsers accounts that have system–level privileges granted through group memberships must have unique password than the users have.
вћўThere must be guidelines to create a standard password such as: –
–Special characters, lower case, uppercase, punctuation, and number.
–Limitation of characters.
– Language of password
– Choose special word or characters to remember easily for users but make it difficult to the outsiders (hackers).
вћўOne–time
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Security And Beyond Information Technology
To I.T. Security & Beyond
Information technology has become a very dominant and ever growing industry in today's market. People have taken notice of it, and thus have
invested quite heavily into it. Everyone is going online nowadays, more than ever before, but this is not just limited to people. Financial/Educational
institutions, and various companies are all online in one form or another; being interconnected to the internet of everything. A prominent aspect of
information technology is security, and it has been attracting a lot of attention as of late. IT Security has garnered many companies and individuals to
invest so much into it; that it has essentially created an industry of its own. However, can all of this investment in IT Security really be justified? Let it
be known that the internet is not secure. It was originally created by the US military for communication purposes, and since then has grown into
network upon networks of computers and computer systems, for everyone to use. With the exponential growth that the internet has taken on, it's very
hard to make it as secure as one would like. However, there are measures and protocols that are put in place to do just that, secure the internet. The
internet is a combination of equipment, protocols and people, that when put together make everything just...work. It is a multi–layered system that
depends on not just the technology itself, but those people who manage/operate it, and of course the investment it requires for
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Firewall Essay
TABLE OF CONTENT
ABSTRACT/SYNOPSIS
A firewall is a product that sets up a security border whose primary undertaking is to piece or limit both approaching and active data over a system.
These firewalls are fundamentally not compelling and suitable for professional workplaces to keep up security of data while it bolsters the free trade
of perspectives. In this paper, i think about system firewall that helps the professional workplace and alternate systems that need to trade data over the
system. A firewall ensures the stream of activity over web and is less prohibitive of outward and internal data and furthermore give inward client the
fantasy of unknown FTP and www availability to web.
1. ... Show more content on Helpwriting.net ...
It ensures protection by standing amongst system and the outside world. The information move in any direction must go through the firewall.
3.0 TYPES OF FIREWALLS :
There are various types of technique which might be executed by a firewall. Some of them are as per the following:
Packet channel
Application gateway
Circuit level gateway
Proxy server
3.1 PACKET FILTER:
It focuses at one packet at once and after that it applies some set of guidelines to every packet and afterwards it chooses to either forward the packet
or dispose the packet. The standards depend on various fields in the IP and TCP/UDP headers i.e. Source and destination address, IP protocol field,
TCP/UDP port number.
Attackers can break the security with the assistance of following techniques:
IP ADDRESS SPOOFING : In this kind of attack, attackers send a packet to inside network, by setting source
IP address equals to IP address of inside client.
SOURCE ROUTING ATTACKS: Here attackers determine the route that is trailed by the packet to move along the web with the goal that packet filter
can be tricked to sidestep its normal checks.
Solution: The solution of this attack is disposed of all packets that use this alternative.
Advantages:
It is Simple to execute.
Low hardware cost, shabby boxes can do packet filtering.
Rules set are less complex.
3.2 APPLICATION GATEWAYS
With a specific end goal to control dangers when internal server permits connections
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Firewall Attack Essay
In the world of computer and network security, there are myriad ways to launch an attack, which, from the perspective of a network, can usually be
defined as "traffic that has vicious intent." There are infinite computer attacks that no firewall can prevent, such as those executed locally on the
machine by a malicious user. From the network's perspective, there are numerous types of attack. Attacks can be grouped into two types: brute force
and precision. Juniper Firewall has the capability to protect against both types of attack. Denial of Service (DoS) attacks are one of the most
well–known network security threats under brute force attacks, which is largely due to the high–profile way in which they can ... Show more content on
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We can use flows or sessions as a way to determine whether traffic attempting to traverse the firewall is legitimate. We control the state
–checking
components resident in Juniper Firewall by configuring "flow" settings. These settings allow you to configure state checking for various conditions on
the device. You can use flow settings to protect against TCP hijacking, and to generally ensure that the fire
–wall is performing full state processing
when desired. We take a case study of attack on a network and perform study of the detection of the malicious packets on a Netscreen Firewall. A new
solution for securing enterprise networks will be developed here.
1.INTRODUCTION
A number of malicious attacks which causes disruption to the processes has been increased due to an increase in the tremendous expansion in the field
of computer networks. The main aim of network administrators is to provide continuous services to which they are intended to. Currently, the main
aim of researchers is to provide secure network whereas, little intervention has been given to the quantification of network security which includes
assessing of the vulnerability and malicious attacks to these systems. One of the huge networks which has more possibility to malware is an Enterprise
Network which is a large and diverse network that connects both major and minor sites within an enterprise.Thesecurity and trustworthiness of
Enterprise Networks have been a major concern in
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The Security Of A Home Network
Technology Report
Yu Lun Chou1730799
MADS 6638 Computer Security Admin.
George Thucydides
4/26/2016
Table of content
Introduction
Inventory
Vulnerability Test
Protection
Support
Incident Response
Introduction Information play an essential role in everywhere. For a company, in order to run the company well, information management is a
necessary skill, and leaking information, odds are , causes significant damage to the company. Even though a private network will not have as great
damage as an organization, people like to keep their privacy. Therefore, thesecurity of a home network is as important as the security of a company,
and it is more universal. Hence this article will present how to built a ... Show more content on Helpwriting.net ...
It provides for home, business, and school, and it provides free and payable products for different feature. According to the website Avast! Review–
Top Antivirus Software, the free download version offers virus and malware detection, integrated password manager, and browser cleanup. In addition,
Rubenking, a world–spanning purveyor of free antivirus protection, marks Avst high score in their independent lab tests and antiphishing test (2015).
Different options for different feature with different price ↑
The feature list in different versions ↑ From the website About Adblock Plus, " Adblock Plus is a free extension that allows you to– among other
things – block annoying ads, disable tracking and block domains known to spread malware"(2016). There are more illustration about the feature of
Adblock Plus from the same website: allow acceptable ads, disable social media buttons, and typo protection (2016). Due to people experience the
inconvenience while surfing the internet the ads pops out and the more important point the adware attack, using Adblock Plus is the appropriate choice.
The Schematic diagram of Adblock Plus ↑
After installing Avast and Adblock Plus online, it shows in extensions ↑ Moreover, Avast and Adblock Plus are available from the internet and it is
free. Therefore, people can reinstall these softwares anytime.
Vulnerability Test According to the lectureNetwork Security Assessment(2007), in order to eliminate the risk of vulnerabilities,
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Using A Virtual Private Network ( Vpn )
Section 1.0
The world is constantly changing especially in technology. Each day new software and hardware is created to accomplish tasks that were not possible
before. These new software's and hardware's offers new problems to come with these new accomplishments. Businesses are constantly looking for ways
to make their employees more efficient. Allowing employees to communicate not just in the office, but remotely is being a requirement at this day and
time.
This company could make use of a Virtual Private Network (VPN) that routes through the firewall. The VPN would allow easy access to the company
network for authorized employees. A VPN would allow the company to have employees that telecommute, work from home, or remote employees. It
would allow our employees that travel frequently – like salesmen – to connect from anywhere they may be. The VPN would allow for a more flexible
work day, and help work get done when it needs to be done instead of during normal business hours. The VPN will run through the company firewall to
help limit the traffic through to legitimate business traffic.
The company must first be aware and understand the risks of a VPN and firewall. This knowledge will help the company make the right decision for
this technology. A VPN and firewall solution is different for every network, and must be customized to this company's network. There is also risks to
not using these tools. It is important for the company to see this risks as well, so
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Network Security And The Internet
The world is more connected now than ever since the birth of the Internet and with the new networking technology coming out, will continue this way.
There is a large amount of personal, business, and government information on the internet and network infrastructures. Network security is becoming
of great importance because of the attacker 's ability to steal this information that can be easily acquired through different means of attacks. The internet
itself along with network infrastructures has many security risks in it. Knowing what attack methods are out there allows users a chance to defend
against them. Learning about the history of the Internet along with network attack and defense allows users and anyone operating within the digital...
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Knowing this information will help any user or organization build a standing defense from an attack. Malware dates back to the 1960s. The systems
were slow, and computer use was rationed among different groups of users. Students were often the last ones to be able to use the internet so they
invented tricks such as writing computer games with a Trojan horse inside to check whether the program was running as root, and if so, created an
additional privileged account with a known password. By the 1970s, large time–sharing systems at universities were the target of pranks involving
Trojans. In 1984, a classic paper by Thompson in which he showed that even if the source code for a system were carefully inspected, and known
to be free of vulnerabilities, a trapdoor could still be inserted. His trick was to build the trapdoor into the compiler. If this was recognized that it was
compiling the login program, it would insert a trapdoor such as a master password that would work on any account. So the next step is to see to it
that, if the compiler recognizes that it's compiling itself, it inserts the vulnerability even if it's not present in the source. So even if you can buy a
system with verifiable secure software for the operating system, applications and tools, the compiler binary can still contain a Trojan. The moral is that
you can't trust a
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Advantages And Disadvantages Of Log Management
iii.COMPUTER SECURITY LOG MANAGEMENT
A log is actually the detailed record of all the events occurring in any organization. They consists few entries: every entry is assigned for specific
event that has occurred within a system or network. Many logs within acompanies composed of few records related to computer security. These
computer security logs are generated by sources, including software security, such as antivirus software, firewalls, and intrusion detection and
prevention systems; operating systems on servers, workstations, and networking equipment; and applications.
A fundamental problem with its management (log management) that happens in many companies is effectively balancing a limited quantity of log
management resources which ... Show more content on Helpwriting.net ...
However, the firewall is still a major threat to network traffic continue to work to stop the lower layer. It can also be a measure of protection from
application–layer firewall and other network security technologies complement the capabilities.
There are different types of firewalls that analyze each with different capabilities of network traffic and allow or block certain instances, by
comparing traffic characteristics to the existing guidelines. To understand the capabilities of any type of firewall and design of firewall policies and
the acquisition of firewall technology, the requirements of an enterprise are effectively addressed to achieve critical protection for network traffic.This
document provides an overview of firewall technologies and discusses their security capabilities and relative advantages and disadvantages in detail. It
also provides examples of where firewalls can be placed within networks and the implications of deploying firewalls in particular locations. The
document also makes recommendations for establishing firewall policies and for selecting, configuring, testing, deploying, and managing firewall
solutions. To improve the effectiveness and security of their firewalls, organizations should implement the following
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Firewalls And Infrastructure Security
Firewalls and Infrastructure Security
A firewall is a network device, hardware, software, or a combination of the two, whose purpose is to enforce a security policy across its connections. It
is comparable to a wall that has a window where the wall serves to keep things out, except those permitted through the window. Asecurity policy acts
like the glass in the window; it permits some things to pass, light, while blocking others, air. The heart of a firewall is the security policy that it enforces.
Security policies are a series of rules that define what traffic is permissible and what traffic is to be blocked or denied. These are not universal rules,
and there are many different sets of rules for a single company with multiple ... Show more content on Helpwriting.net ...
Advanced firewalls employ stateful packet filtering to prevent several types of undesired communications. Should a packet come from outside the
network, in an attempt to pretend that it is a response to a message from inside the network, the firewall will have no record of it's being requested and
can discard it, blocking access. As many communications will be transferred to high ports, above 1023, stateful inspection will enable the system to
determine which sets of high communications are permissible and which should be blocked. The disadvantage to stateful inspection is that it takes
significant resources and processing to do this type of inspection and this reduces efficiency and requires more robust and expensive hardware. This
type of inspection is essential in today's comprehensive networks. As they are in routers, switches, servers, and other network devices, Access control
lists are a cornerstone of security in firewalls. Just as you must protect the device from physical access, Access control lists do the same task for
electronic access. Firewalls can extend the concept of Access control lists by enforcing them as well at a packet level when packet–level stateful
filtering is performed. This can add an extra layer of protection, making it more difficult for an outside attacker to breach a firewall.
Some high–security firewalls also employ application layer proxies. As the name
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Visualization And Simulation
Computer and Networking Visualization and Simulation (CANVAS) is a Cybersecurity annual event in which students compete to learn and describe
the vulnerabilities in a pretend system situation. The 6th Anniversary was held at Regis University's Denver Tech Center on April 1, 2011. The
students were provide with the essentials to explore the computer–generated network for vulnerabilities, and what countermeasures they would use to
prevent this from occurring in the future. During this event the students' were provided with a simulated network with a diagram.
While analyzing the network for vulnerabilities, risks, threats and ways to secure the network, the below information are my findings.
Vulnerabilities:
When analyzing CANVAS for... Show more content on Helpwriting.net ...
By using the Colorado Energy Company diagram as their simulator project, allowed the students to analyze their systems for vulnerabilities, threats as
well as risks. The network system was attacked due to possible malware, no firewall, network sniffing as well as spoofing. Having the above
mentioned ways of securing the Colorado Energy Company's network may not prevent an attack, but it definitely will make it more difficult for a
potential attacker to gain access into their
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Essay on Identifying Potential Risk, Response, and Recovery
With identifying potential malicious attacks, threats, and vulnerabilities, measures need to be taken to deal with the malicious activities. A strategy is
needed to deal with each of the risk of the malicious attacks and threats in the previous memo. Also controls will need to be setup to help mitigate
those risks of the attacks. A strategy and controls need to also be setup to mitigate each of the vulnerabilities from the previous memo to help protect
the computers and network for the business. There are different strategies that can be used for dealing with the risk of a malicious attacks and threats.
The strategy used will depend on the type of attack and threat, the strategies are risk mitigation, risk assignment, risk acceptance,... Show more content
on Helpwriting.net ...
Administrative controls are to ensure people understand and follow the policies and procedures. Preventative controls try to stop threats from trying
to use a vulnerability to gain access to the network or computers. Detective controls identity a threat that has hit the network and computers and
corrective controls reduces the effects of a threat on the system. The most common malicious attack and threat are from viruses and other malware.
There are different types of viruses to protect a network and computers from and viruses can get into the network in different ways, mostly by email
and websites on the internet. The best strategy for dealing with the risk for viruses and other malware would be risk mitigation. Viruses and other
malware cannot be avoided or transferred to another business since our computers and network is here in the business for people to utilize. Viruses
are also not an acceptable risk, the damages from viruses will outweigh the money spent to protect the network and computers. For these reasons, the
strategies of risk assignment, risk acceptance, and risk avoidance are not appropriate to use to mitigate the risk. Antivirus software can be purchased
and placed on the computers to help prevent viruses' infections would be cheaper than money spent on the time techs to remove viruses from all
systems and replace any hardware that may be damaged by the virus. The controls needed to mitigate the risk of virus and
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Advantages And Disadvantages Of Honeypots
Abstract–Computer Networks and Internet has become very famous nowadays since it satisfies people with varying needs by providing variety of
appropriate services. Computer Networks have revolutionized our use of computers. Online bills, shopping, transactions and many other essential
activities performed on the go by just a single click from our homes. Though it is a boon in this era, it also has its own risks and weaknesses too.
Industries need to tussle to provide security to their networks and indeed not possible to offer a cent per cent security due to the intangible intelligence
of hackers intruding into the network. This paper exploits the concept of honeypots for providing security to networks of industries which may not
have custom... Show more content on Helpwriting.net ...
1. INTRODUCTION
The Internet is a network of networks. It is based on the concept of packet switching. Though the services offered by Internet are extensively used from
a layman to multi–millionaire it also has its own defects. Many attacks on Internet are being identified and reported. Some of the common types of
network attacks are eavesdropping, data modification, identity spoofing, password–based attacks and denial of service attacks. To overcome all these
types of attacks an organisation usually installs an intrusion detection system to protect the confidential data exchanged over its network. The local
network is then connected to the Internet thereby availing the employees to be online on the fly. Information security has three main objectives namely
1. Data confidentiality 2.Data integrity 3. Data availability. Data confidentiality ensures that the secure data can be accessed only by authorized
persons. Data integrity allows secure modification of data. Data availability ensures that the data is available readily to authorized persons. Small scale
industries often do not prefer on intrusion detection systems due to its installation and maintenance costs. Honeypots and Honeynets are an efficient
alternative for such
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The Importance Of Firewalls On The Operation System
This paper describes about firewall management as one of the components in information assurance, which elaborates the importance of firewalls on the
operation system. Illustrating the example of the online transaction that can use firewall management to mitigate the risks of severe consequences from
cyberattacks. Besides, there are some limitation of firewalls as well that we have to consider in operating the system even if the firewall is protecting the
system.
Introduction
Nowadays, information assurance (IA) plays an important role in every business sector, which is the key to dependable management decision–making,
users trust, business continuity and good corporate governance (Ezingeard, McFadzean, & Birchall ,2005). As quality and ... Show more content on
Helpwriting.net ...
Integrity is to ensure that information is not corrupted. Lastly, availability is to ensure that information is always ready to support the demand of users.
There are many diverse kinds of information assurance services in the market nowadays, which provide independent validation and verification services
with innovative software or applications towards the organization's system (Ezingeard, McFadzean, & Birchall, 2005). According to Managed Security.
(N.d.), Dell security service provides capability of protection towards the network, essential internal asset, remote users and important information. In
this paper, I would like to expound one of the critical services as information assurance, named firewall management, which is the important
component in the part of information assurance in every organization.
Firewall Management
What is Firewall Management? According to Managed Firewall (N.d.), Firewall management is a security service which prevent unauthorized access
and costly breaches in the organization's system. This service requires a high level of expertise in order to manage and control the system, in which
the network traffic must be monitored incessantly to protect from cyberattacks before the devastation is done. As mentioned in Harrison (2011), it
defines firewall as gatekeepers for the corporate network and data center perimeters. The procedure of Firewall is to control and scan the network
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The Problem Of Computer Security
Computer security has been creating issues in the news lately. Almost every week, corrupt forces try to take down high–profile websites. Companies
lose millions of dollars and suffer damage to computer systems. As a result, large companies spend thousands of dollars on security systems and
products to protect the doors to their corporate networks.
It 's hard to set a barrier for the intruders. Most systems administrators and users have built up a tolerance to attempted hacking. They have accepted
intruders as the norm.
An intruder attack is only one side of security .Viruses are another big security threat; the fact that they spread easily only increases their infestations.
For example, worm viruses spread when users open email attachments, which cause the virus to email itself to the user 's entire contact list. Other
Trojan horse viruses can come into your system and leave a back door for intruders who will use your computer as a Threat Machine to spread or to
make countless attacks on other users machines.
Because the operating system plays an important role in a computer 's functioning, and because it 's the only layer between the machine 's available
resources and its users, it 's critical that the OS resists compromise.
Hardening is this process of establishing a strong security wall against unknown threats. System administrators harden against whatever they think
could be a threat. This guide is designed to provide a reference for system administrators who need to
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Analysis Of Network Concepts For A Small Accounting Firm

  • 1. Analysis Of Network Concepts For A Small Accounting Firm This paper presents an executive summary of network concepts for a small accounting firm. This paper also discusses the vulnerabilities of the proposed system as well as the devices, services and over–all requirements to make it operational. Furthermore, the specifications of the network security as well as the procedures that will take place are also expounded in this paper. The purpose of the giving specific details is to give the firm and users a clear picture of how the system will be implemented. This paper will also determine the feasibility of the system and its expected benefits for the firm. Keywords: Network, Network Security, Network Devices, Network Services, Security Measures, Users, Data Theft, Ethics I. Introduction Network breaches pose a serious threat to all companies especially to those who are primarily engaged in managing finances of their customers. This vulnerable industry includes accounting firms, small and big alike. In fact, the biggest security breach in 2014 reported by Target Corporation (an American retailing company operating in Minnesota and the second largest discount retailer next to Walmart) includes 40 million credit and debit card number of customers which were stolen during the holiday season [1]. This proves that hackers are majorly concerned with obtaining the financial information of clients in order to acquire money. Thus, accounting firms are indeed susceptible to network security breaches which is the reason why a well–tested ... Get more on HelpWriting.net ...
  • 2. The Steps Of Good Computer Security Operations Introduction A successful BC/DR plan has defined steps within the project that must be defined. We need to initiate the project, identify key business processes, conduct an impact analysis, develop business continuity strategies, identify communication needs, and finally monitor and review the plan. Mitigating the impact of a disaster be keeping mission critical capability available when needed is key to any BC/DR plan. These plans are often critical to a company and the company 's business model. There is a significant amount of time, money, and physical resources that go in to a successful BC/DR plan. Background and Significance The steps we take to create a BC/DR resemble the steps of good computer security operations. Threat evaluation, risk assessment, mitigation, and service priorities, are a few of the computer security operations that directly relate to a good BC/DR plan. When implementing a BC/DR from a administrative standpoint we see a significant shift in focus from computer security to physical infrastructure, backup and restoration procedure, staffing, logistical operations, and connectivity. To ensure the system stays operational in a degraded state a business must address the integrity of the system. Without computer security considerations a BC/DR plan can fail and turn into an unmanageable situation. During a restoration of workstation in a BC/DR plan, it may be possible to get bad data from a location that was not maintained correctly, which could ... Get more on HelpWriting.net ...
  • 3. Strong Proactive Information Security Measures Strong proactive information security measures in an organization could mean the difference between a data breach and normal business. As it stands, attackers are getting more persistent, better at finding out confidential information, and constantly finding new ways to gain access to internal networks. In order to meet the rising threat, organizations must be able to defend themselves properly. While standard perimeter defense measures can accept and deny connections, they lack a strong deterrent to ensure there will be no future attacks. This report focuses on an intrusion technology that will gather information and use it to recraft a similar attack back to the attacker in hopes that a much stronger message will be sent. 1. Introduction With cyber–attacks on organizations becoming more frequent, and with the need to keep organizations secure, counter–measures must be taken. While firewalls can help to prevent attacks, simply dropping packets and declining services is becoming an inefficient message to send to attackers. Taking existing perimeter defense techniques, like firewalls, and amplifying them to create a new style of device that will respond to attacks is the next step in firewall technology. With these Offensive Perimeter Devices (OPDs), organizations can fight back. Imagine being able to replicate the attack that is in progress and use it against the attackers. The OPD will help to eliminate Denial of Service attacks and ultimately keep an organization up ... Get more on HelpWriting.net ...
  • 4. Firewall Intrusion Detection And Honeypot Using Raspberry Pi Firewall intrusion detection and Honeypot using Raspberry pi Submitted in partial fulп¬Ѓllment of the requirements for the degree of Bachelor of Engineering in Computer Engineering By Dishant Modi 130170107046 3.2 Schedule Representation.............................................................16 3.2Risk Management........................................................................17 3.2.1Risk Identification...............................................................17 3.2.2 Risk analysis.......................................................................17 3.2.3 Risk planning......................................................................18 4.System Modeling 4.1.Dataflow diagrams...............................................................19 4.1.1.Context Level Diagram................................................19 4.1.2.Level – 1 DFD..............................................................19 4.1.3.Level – 2 DFD..............................................................20 4.2.Use case diagrams ...............................................................20 4.3.Activity Diagrams .................................................................21 4.4.Sequence diagrams ..............................................................22 4.5.Class Diagrams....................................................................23 4.6.System Architecture..............................................................24 5.Configure Raspberry pi......................................................................25 6.Testing.............................................................................................30 7.Conclusion.......................................................................................31 Bibliography and References..................................................................32 Ied. A widely accepted alternative or at least complement to host–based security services is the firewall. The firewall is inserted between the premises
  • 5. network and the Internet to establish a controlled link and to erect an outer security wall or perimeter. The aim of this perimeter is to protect the premises network from Internet–based attacks and to provide a single choke ... Get more on HelpWriting.net ...
  • 6. Network Security Is Important For Protecting Your Computer Network Security EET 5720 Daljot Rai Have you ever surfed the web and received a popup alerting you a threat is detected? If so, you are not alone. This is a very common issue web browsers and organizations face. In order to resolve or prevent such issues, it is key to learn about the security of your network. Network security is the protection of networks that help secure files and directories of a computer. It helps protect the user from hackers, virus attacks, misuse and prevents unauthorized access. The importance of learning and becoming aware of network security is important for protecting yourself and others around you. I will be discussing the common type of attacks, methods to protect your computer from harm and discuss what the future may hold for network security. There are many attacks that can be associated with network security, eavesdropping, viruses/malware and Trojans, phishing, IPspoofing attack and lastly denial of service. Eavesdropping, has two subcategories passive and active. Passive eavesdropping refers to someone listening to a phone call, or reading a chat email (Daya, Bhavya). Active eavesdropping refers to the hacker physically going in and distressing the conversation (Daya, Bhavya). This type of attack allows the hacker to steal confidential information. In this circumstance, it is important to have some sort of network security because having someone listening in on a personal conversation can be detrimental. This can be solved ... Get more on HelpWriting.net ...
  • 7. Kudler Fine Foods IT Security Report and Presentation –... Kudler Fine Foods IT Security Report and Presentation – Top Threats CMGT/400 December 2, 2013 Kudler Fine Foods IT Security Report and Presentation – Top Threats Team B has been commissioned to examine the Kudler Fine Foods' (KFF), frequent shopper, Customer Loyalty Program that is currently in development. The team has also been asked to direct the system development team to ensure the system is established securely so that it properly protects company data and customer information throughout all stages of the system development process. In week 2, the team will examine the Customer Loyalty Program for vulnerabilities in different areas of the system. The study will define the possible threats... Show more content on Helpwriting.net ... The first of these threats is Social Engineering. Social Engineering according to Social–Engineer.org (2013), is "the act of influencing a person to accomplish goals that may or may not be in the 'target's' best interest. This may include obtaining information, gaining access, or getting the target to take certain action." The employees themselves are the area of the system affected by this threat. Social Engineering exploits their naivety. General lack of experience in recognizing this type of attack is a major reason for its success. Education on what Social Engineering is and how to recognize attacks coupled with company policies written, put into place, and enforced to prevent individuals from divulging or even having access to certain information no matter the scenario is the recommended course of action. Next is Denial of Service. According to Conklin, White, Williams, Davis, and Cothren (2012), a Denial of Service (DoS) attack is an attack intended to disrupt a system or service from operating normally. The attacker will attempt, through means of crashing the system, closing out a logged on session, or overwhelming a machine with multiple ... Get more on HelpWriting.net ...
  • 8. Swot Analysis Of Joubert Network Security Joubert Network Security firm would like to thank you again for allowing us the time to provide exceptional and efficient security change to your network. We have conducted an assessment of the current network security and we will provide you with major recommendations for an optimum security and hardened network. The very purpose of this report is to find any vulnerability in your network and proposed sound and effective change to mitigate any breach and be as proactive as possible. A proactive approach will save money and keep your business running. Businesses with hardened systems succeed. As with any business ignorance will cost millions. The lack of a user education will innocently pave the way for vulnerabilities and hacking. The methodology used is a penetration testing in your defense system (firewall) and a thorough assessment that will pinpoint issues and find risks. Hackers use the same methodology to penetrate any back door left open by inexperienced and uneducated users that will open a way for hackers innocently and lead the way to malware and viruses. No system is safe from hacking. However, hardened your network against any potential attack will spare your business from breaches and catastrophes. As a result, we have evaluated and assessed the network security and have found the following results. First, the existing Smoothwall firewall is an effective open source firewall which provide services for web filtering, VPN, IPS and Email services. IT also ... Get more on HelpWriting.net ...
  • 9. Firewall : A Good Firewall The first line of defense that should be used to use to protect operating systems is a good firewall. Firewall is known to keep intruders from getting into your network or system. Microsoft defines a firewall as a software program or piece of hardware that helps screen out hackers, viruses, and worms that try to reach your computer over the Internet ("Firewall: What It Is and How It Works", 2016). In Computer and Information Security, John Vacca mention that a good firewall or a system that effectively incorporates several security features in one is a better option to protect a system (Vacca, 2013). Vacca even went on recommending Secure Firewall from Secure Computing being one of the strongest, government trusted and most secure firewall products available. Diagram 2 – Firewall as a Protection Firewall Advantages There are multiple of advantages that comes with firewalls, which includes: 1.When dealing with bad packet, a firewall is going from blocking malicious packets that can harm the system and network. When dealing with firewalls is better to approach a malicious packet by where to block them instead of focusing on whether to block dangerous packet. A user operating system firewall can be constructed to provide security and protection. In addition, a user can also add protection to multiple system by adding a network–based firewall. 2.If the network ever gets compromised a System Administrator can be alerted in advanced if the firewall is properly designed. ... Get more on HelpWriting.net ...
  • 10. Network Security Is The Procedure Of Computer Or Any... Network security is the procedure of preventing and identifying unsanctioned use of your computer or any computer on your network. Preventative measures allow you to stop unauthorized users, also known as "intruders" or "hackers," from accessing your computer system. Detection helps establish whether or not someone has attempted to break into your system, if they were successful, and what they may have done . The Internet has grown to give us the ability to shop, pay bills, and create online profiles hence, people and businesses need to make the proper steps to secure their network. And while you may not consider your communications to be particularly interesting or confidential, its likely that you do not want strangers reading your... Show more content on Helpwriting.net ... Furthermore, researchers have developed some newer methods, such as protocol normalization and distributed firewalls but they have yet to be widely adopted . In addition, because selective data must be able to pass in and out of a firewall in order for the protected network useful, every attack cannot be stopped by firewalls. Particular emerging technologies, such as Virtual Private Networks and peer–to–peer networking pose more modern challenges for firewalls . Like firewalls, if you put intrusion detectors in place as a preventative measure you could be saving your network from security meltdown. Intrusion detection is when you monitor the happenings of a network itself and investigate possible incidents or impending threats of computer security policies or acceptable use policies. After you put intrusion detection and prevention systems in place, it mainly focuses on recognizing likely incidents, recording data regarding them, remediation, and reporting them to security administrators. The remediation process use several response techniques, which involve the IDPSs hindering the attack itself, altering the security environment (e.g., reconfiguring a firewall), or modifying the attack's content . Furthermore, organizations use intrusion detection for additional purposes, such as looking for holes in security policies, documenting current threats, and discouraging other individuals from ... Get more on HelpWriting.net ...
  • 11. Storage Of The Packet Filtering Essay 1)According to Bergstra and Burgess (2007), static packet filers have a complex network layer. They only examine one packet at any given time. They also block SNY scans over the network. By only considering one packet at a given time, stateless packet filtering does not stop major attacks determined by knowing the position of the packet in a given stream of traffic. There is no context applied to the packet during transmission. For instance, stateless packet filtering cannot protect against denial of service (Do S) attack as it only examines the individual packets, instead of determining the connection state alongside the related and or unrelated packets. 2) Hinglaspure and Burghate (2014) indicates that since static filers do not preserve the results after examining the packets, they are unable to relate the current and already examined packets. By only examining some fields of the Internet and Transport headers, static packet filtering cannot stop the attacks using other packet portions. Hackers are able to fool static firewalls easily because they are not smart enough. For instance, the filters may not examine attacks that use data field of the application messages, making the system more disposed to to the external attack. 2)Application proxy severs safeguard the internal clients from some mischievous external servers. They force all client connections to pass through the proxy that in turn examines the application content of all packets during transmission. ... Get more on HelpWriting.net ...
  • 12. The Network And The Internet / External Network As you can see in the diagram a Duel–Homed Gateway Host is placed between the internal network and the internet/ external network. A duel–homed host can router packets between the two networks that are connected, but usually this function is disabled making it so neither of the two networks can not communicate with each other, but can communicate with the duel–homed host. However, the duel–homed host can see network traffic that goes across both internal and external network. A dual–homed host can provide services only by proxying them, or by having users log into the dual–homed host directly (O'Reilly Building Firewalls [10]). Duel–homed Firewall architectures is used when traffic to the internet is small and it is not business critical. Also it is used when the network being protected does not contain extremely valuable data. Another firewall architecture that is used in today's networks is the Screened Host Architecture. It is also called the Screen Host Gateway. A screened host architecture provides services from a host that 's attached to only the internal network, using a separate router (O'Reilly Building Firewalls). The primary Security feature that is provided with this architecture is packet filtering which is done by the screening routers used. This type of architecture uses a screening router (like in a single–box host), but also uses something called a "bastion host" (O'Reilly Building Firewalls). The bastion host is going to sit on the internal network and ... Get more on HelpWriting.net ...
  • 13. Implementing An Automated Distributed Firewall Abstract This paper discusses about implementing an automated distributed firewall in an emulated environment allowing researchers, educators and companies for research purposes and to experiment a realistic distributed firewall before implementing one in real life. This eliminates the manual configuration of each firewall which is time consuming and prone to errors and eliminate repeated experiments. Traditional firewalls are topology restricted and considerer everyone on the inside are trusted and one on the outside is a least potentially an enemy. In order to overcome the difficulties for traditional firewall the idea of distributed firewall was proposed. This demonstration will show a platform to automate emulated distributed ... Show more content on Helpwriting.net ... In the recent years, the threat that faces data and information has been systematically increasing, from viruses to organized gangs that aim to stifle the operations of information systems, steal crucial information or facilitate leakage of competitive information. A firewall is a collection of components, interposed between two networks, that filters traffic between them according to some security policy (Cheswick & Bellovin, 1994). Due to the increase in network attacks and awareness of cyber security firewalls are used not only in companies but also in home networks. Firewalls are the frontline of defence to secure the networks from security risks and attacks from cyber criminals. Firewalls filters network traffic based on filtering rules defined by the firewall administrator or admin. Although firewalls protects from network attacks, virus etc, it depends on the firewall policies defined, if the policies are not defined properly it proposes a security risk and limits the effectiveness of firewall security. . There are mainly three types of firewalling techniques based on the OSI layer in which the firewall is acting on. They are (1) packet filters, which inspect each packet passing through them, (2) application Gateways which act on specific applications such as FTP, Telnet etc and (3) circuit level Gateways, which apply security mechanisms whenever TCP and UDP connections are established. Firewalls have ... Get more on HelpWriting.net ...
  • 14. Annotated Bibliography On Software Firewalls Essay CHAPTER 6 EXERCISE 1 SOFTWARE FIREWALLS: A Firewall basically prevents the private network connected to the internet from being accessed by unauthorized user and therefore handles the traffic of internet. Hardware and software firewalls are the types of this network security system. It examines the each data in the network and blocks the data which is not valid and are from unauthorized user. We will discuss here only software firewalls. Software firewalls: Software firewall is suitable for the personal computers at home and it is software so it can be easily installed by the user and then user can easily manage its properties and functions. Thus we can protect our system form the unauthorized access and also from different harmful viruses. There are further two types of software firewalls: a.Rule based b.Non– Rule based Rule based firewalls include firewalls like Norton personal firewall and Non rule based includes Zone alarm. Now we will discuss various software firewalls. Software firewallFunctionalityType of ProtectionCostFeatures Zone alarmIncludes inbound intrusion detection system, ability to control programs from creating outbound connectionsBlocks dangerous malware and malicious apps. Blocks hackers from remotely accessing and controlling your device. Zone alarm Pro firewall costs $44.95/yearPublic Wi–Fi protection, Privacy protection Hacker shield, App permission monitor, Anti–Phishing, Anti–malware. Comodo firewallIncludes antivirus program,
  • 15. ... Get more on HelpWriting.net ...
  • 16. Benefits Of Using The Internet Introduction: In modern society we heavily rely on computers for a number of different reasons whether that be paying bills, shopping online or simply staying in touch with family and friends. If you take a look around at daily life it is clear to see just how important computers and technology are to us, they make life easier. One would never have that one day you could do your shopping without having to leave the comfort of your own home, this is just one of the basic uses of the modern computer. The fastest growing element of the computer world is the internet, due to this development the internet has now become the main communication method within the current generation whether that is between people or companies. The internet has a lot of benefits, people and companies can communicate and connect with others in various locations, therefore companies can take advantage of using the internet network to support their business, however there are some disadvantages to this method, using the internet heavily to communicate can leave companies and people vulnerable to cyber–crime such as network attacks, this results in companies taking extreme actions to have the best network security possible and maximise efforts to protect their network. A majority of people think that security attacks happen externally, someone outside the company but in fact internal attacks happen more frequent and are more harmful, Cryptek (2001) based the argument from some articles, "that internal ... Get more on HelpWriting.net ...
  • 17. Firewall Essay Introduction: Ensuring the Windows Network Security and classification of system movement, regardless of whether in the cloud or on–premises, is a basic piece of any information insurance technique. Securing the system foundation anticipates assaults, piece malware, and shield your information from unapproved get to, interfered with access, or misfortune. In general society cloud, the confinement of client foundation is basic to looking after security. Microsoft Azure, on which most Microsoft business cloud administrations are fabricated, fulfills this essentially through an appropriated virtual firewall, divided neighborhood (LANs), and physical detachment of back–end servers from open confronting interfaces. ... Show more content on Helpwriting.net ... Divided LANs empower you to isolate movement by sectioning your virtual systems and control how activity goes between various IP subnets. Multi–level topology empowers you to assign subnets and assign isolate address spaces for various components of your workload. These coherent groupings and topologies mean you can characterize diverse access strategies in view of workload sorts. Movement separation guarantees that your virtual machines (VMs) and interchanges stay private inside a virtual system. Cross–premises availability empowers you to build up associations between a virtual system and different on–premises locales, or other virtual systems in Azure, by utilizing VPN portals or outsider virtual machines. Access Control Lists are deciding that you can make at various levels of granularity, including system interfaces, individual VMs, or virtual subnets.When you empower Azure Security Center for your membership or Resource Group, Azure Security Center gives suggestions and alarms to arrange security issues, with a concentrated entrance from which you can help secure your Azure organizations and avert, recognize, and ... Get more on HelpWriting.net ...
  • 18. An Effective Network Security Measure This creates a layered method of protection, in which they have to successfully pass through all layers, making it harder for an attacker to penetrate network defenses. Based on research a multifactor authentication system is a more secure and harder to penetrate method, great for the energy sector; making it an effective network security measure. 3.Firewalls A firewall is an access control security tool used to prevent unwanted access to a network. It is usually the first line of defense and serves sort of like a gate in which all outside network traffic and internet connections are verified prior to granting access to a private network, making sure it meets security policies in place (IU, 2013). With a firewall a provider can establish which traffic is acceptable and which isn't and the firewall simply executes at command, blocking all unrecognized access making the network more secure. Firewalls originated in the late 1980's getting their name from firefighting and prevention, signifying keeping a fire out (Rouse, 2014). If an attack on your network occurred it could be compared to a fire which is where the firewall comes in, keeping negative effects out. Firewalls are said to now be used as a major defense against cyber–attacks. There are several types of firewalls. The most commonly used are; Packet filtering firewalls: These were one of the first firewalls used. Their main function was to monitor the flow of packets from the internet, verifying the ... Get more on HelpWriting.net ...
  • 19. Information Security Information Security As the world migrates to the digital village, a lot of digital data and information is generated and transmitted. In the same line, there is a growing need for data repositories or data banks. Information security is chiefly concerned about prevention, detection and response to computer threats or risks (CISCO, 2013). Protecting organizational information and systems is a daunting task because of the emerging and advanced threats to information technology resources. Securing information technology infrastructure and informational assets is a continuous cycle as advancements in technology presents a new breed of threats (Hunt, 1998). In the current business landscape, accounting systems are typically modules of ... Show more content on Helpwriting.net ... Types of firewalls According to CISCO (2013), firewalls are categorized into software and hardware types. Hardware Firewalls and their advantages Hardware firewalls are specialized network systems that contain specialized software and hardware. When they are configured appropriately, these firewalls provide a protective barrier that hide an entity's internal computers and applications from the outside world. Hardware firewalls can also shield organization department; for instance, the human resources from another department such as the finance department. Hardware firewalls are mostly applicable in scenarios where entities require a unitary information security umbrella with the capability of protecting multiple systems (CISCO, 2013). This reason points out why most FORTUNE 500 company networks have implemented hardware firewalls. However, since hardware firewalls are specialized devices or systems, they tend to be complicated, expensive, tricky to configure and difficult to upgrade. That is to say, they are best reserved for Information Technology experts or consultants trained to assess, install, configure and maintain such systems. In addition, the low–end hardware firewalls currently found in network devices such as routers and switches for homes and small businesses are also limited to locations. In other words, if an accountant or any other user from the accounting department takes their mobile devices or laptops to the road, their ... Get more on HelpWriting.net ...
  • 20. Worldwide Network Security MARKET ANALYSIS Worldwide Network Security 2012 –2016 Forecast and 2011 Vendor Shares John Grady IDC OPINION The worldwide network security market grew by 6.1% in 2011. The total market, which includes firewall, unified threat management (UTM), intrusion detection and prevention (IDP), and virtual private network (VPN) solutions, reached $7.4 billion in 2011. UTM revenue saw the strongest growth at 17.4% and reached $2.2 billion. The IDP market saw more moderate growth at 4.5%, reaching $1.9 billion. The firewall segment remained the largest component of the market at $2.4 billion but grew only a modest 2.9% over 2010. Revenue from standalone VPN solutions fell 5.3% to $0.9 billion. IDC expects the firewall and VPN segments to remain ... Show more content on Helpwriting.net ... 15 11 Key Forecast Assumptions for the WorldwideNetwork Security Market, 2012–2016 .................. 18 12 Worldwide Network Security Revenue, 2006–2016: Comparison of November 2011 and June 2012 Forecasts.................................................................................................................... 26 ©2012 IDC #235631 LIST OF FIGURES P 1 2 Worldwide Network Security Revenue by Function, 2007–2016.................................................. 14 Worldwide Network Security Revenue, 2006–2016: Comparison of November 2011 and June 2012 Forecasts.................................................................................................................... 27 #235631 ©2012 IDC IN THIS STUDY This IDC study examines the worldwide network security market, including firewall, UTM, IDP, and VPN solutions, from 2011 to 2016. It provides vendor revenue shares and market sizing for 2011 as well as market growth forecasts for 2012–2016.
  • 21. Methodology See the Methodology in the Learn More section for a description of the forecasting and analysis methodology employed in this study. In addition, please note the following: пЃ№ The information contained in this study was derived from the IDC Worldwide Security Appliance Tracker as of March 30, 2012. пЃ№ All numbers in this document may not be exact due to rounding. пЃ№ For more information on IDC 's definitions and methodology, see IDC 's Worldwide Security Products ... Get more on HelpWriting.net ...
  • 22. Why Should Pay Card Security Be An Important Issue For Tom? Mark Maciasz Case Study Three 6 March 2016 Case Study Three Why should payment card security be an important issue for Tom? Restaurants have a tendency to be targets for cyber criminals. These criminals steal and reconfigure the payment card data for their own purposes. At the Heartland Cafe, Tom has a chance to be a target for a cyber attack by being in a high–traffic area. If the customer is compromised, Heartland Cafe will quickly lose public trust and perhaps Tom will lose the business altogether. Extra measures toward risk management should be taken to ensure that the business itself remains safe. Compliance with PCI–DSS protocols, PTS requirements and the franchisor should inform the franchisee of any software that could translate ... Show more content on Helpwriting.net ... Tom has been using an outdated system to protect his server. At first, Tom felt that Heartland had no issues withsecurity. Under his own investigation, Tom proved to himself that his security was strong to the investigators. But the Restron POS software implemented to protect Heartland failed to meet PCI–DSS or PA–DSS protocols, since Tom had been using an outdated system since 2009. As it turned out, Restron dropped that POS reseller, but Tom continued to use the POS reseller. The government has increased it's oversight over companies and asked those to comply with basic security regulations which safeguards computer systems and networks. Years later, the police arrived to inform him informed of a recent breach in the Heartland Cafe network. Detectives on the scene checked and analyzed for any possible vulnerabilities, where Tom confessed that his POS reseller, franchisor and POS reseller neglected to tell Tom to conform with the updated PTS requirements. The investigators learned that Tom's scans originated from a different location and confirmed that the Heartland Cafe was a victim. While Tom was updating his security measures, he temporarily shut down Heartland Cafe in order to address this issue. How should Tom view and approach PCI–DSS compliance? Cyber attacks break the encryption connection and read sensitive personal information, including passwords, credit card numbers, trade secrets, or financial data. Any communication ... Get more on HelpWriting.net ...
  • 23. The Security Of A Network There are many threats today that can compromise the security of a network. Network security is now more important as ever as attacks on networks that hold valuable information are being breached, even with security measures put in place. One of the biggest threats to a network is data theft. Outside hackers pose the greatest threat. These thieves target a company's network and steal information through vulnerabilities that they have found in their networks. They usually gain access through the use of a Trojan horse, which is a program that looks legitimate but can be used by others to gain access to the network. They may also use a virus or worm, which can infiltrate a network with malicious code and replicate itself in a network. Others try to gain entry by attempting to crack the network passwords or user accounts. We hear in the news how networks that were supposed to be secure were breached and information was stolen that could have negative consequences. Yahoo discovered that their network had been attacked continuously for the past two years but only recently discovered it. Information that was stolen ranged from users birth dates to passwords that were encrypted (Lien). When a network has been successfully breached and information stolen, the company who has fallen victim to this not only sees their reputation hurt but also suffer a large drop in their stock prices. This hurts people who may have some shares in that company as many retirement plans tend to invest ... Get more on HelpWriting.net ...
  • 24. Essay On Aircraft Solutions Course Project: Security Assessment and Recommendations – Phase I & II Aircraft Solutions Table of Contents Executive Summary..............................................................1 Company Overview..............................................................1 Hardware Vulnerability.........................................................2 Policy Vulnerability..............................................................3 Hardware Solution...............................................................4 Policy Solution.....................................................................5 Summary...........................................................................6 Executive Summary The purpose of this paper is to explore and assess computer security as it relates to Aircraft Solutions. Aircraft Solutions provides products and services to a range of companies that require highly specialized skills. Information is accessed by internal and external users via their Business ... Show more content on Helpwriting.net ... "Security needs to be addressed as a continued lifecycle to be effective. Daily, there are new attack signatures being developed, viruses and worms being written, natural disasters occurring, changes in the organization workplace taking place and new technologies evolving, these all effect the
  • 25. security posture in the organization" (King, 2002). This being said, it is important to evaluate firewall and router rule sets more frequently. The possible threats against this policy include improperly configured network infrastructure which leads to a domino effect that could start with malicious programming which could end in data loss. Many of these threats may be unintentional as some users may not be aware of the risks and how their processes and procedures open the door for such attacks. For this reason alone, a more frequent evaluation is needed. This vulnerability could lead to data loss and the exposure of trade secrets, client lists and product design. The exposure of such information for most companies could mean a financial collapse as it no longer has the competitive edge that makes it the industry leader. While the likelihood of this threat is very high, "security risks to the network exist if users do not follow the security policy. Security weaknesses emerge when there is no clear cut or written security policy document. A security policy meets these goals: i. To inform users, staff and managers of their obligatory requirements ... Get more on HelpWriting.net ...
  • 26. IS3220 FINAL STUDY GUIDE IS3220 FINAL STUDY GUIDE 1.) Know how NetWitness/Wireshark investigator work Investigator provides security operations staff, auditors, and fraud and forensics investigators the power to perform unprecedented free–form contextual analysis of raw network data captured and reconstructed 2.) Know what type of information can be detected from a packet header Control Information 3.) Know how TCP established a connection To establish a connection, TCP uses a three–way handshake. Before a client attempts to connect with a server, the server must first bind to and listen at a port to open it up for connections: this is called a passive open. Once the passive open is established, a client may initiate an active open. To establish a connection, ... Show more content on Helpwriting.net ... 12.) Know the attacks a hacker might perpetrate and how a hacker might make money from the attacks Eavesdropping, breaking and entering, social engineering, malicious code, session hijacking, man–in–the–middle attacks, wireless hacking, SQL injections, web site attacks, and more. 13.) Know what in a organization is vulnerable to social engineering People are the vulnerability 14.) Know how a buffer overflow attack works Is an anomaly where a program while writing data to a buffer, overruns the buffers boundary and overwrites adjacent memory, this is a special case of violation of memory safety. 15.) Know what attack types: impersonation, reciprocity, and phishing fall under Social Engineering Attacks 16.) Know what happens in each of the 7 IT domains
  • 27. User– defines the people who access an organizations information system. Workstation– the computer on your desk, this can extend to other devices that provide access to computing resources. LAN– sub network that is made up of a group of clients plus servers which are under the control of one central security. LAN–WAN– computing network technologies used to transmit data over long distances between different LANs WAN– spans a large geographic area. Systems/Applications– the critical infrastructure of server systems, applications, and data. Remote Access– accessing the computing services from outside the boundary of the computing ... Get more on HelpWriting.net ...
  • 28. Technology And Systems Administration Has Prompted... As indicated by Kizza (2013), the fast development of systems administration has prompted expanded security dangers. A large portion of these dangers are an aftereffect of hacking, uncalled for employments of system assets and system gadget vulnerabilities. Familiarity with the different shortcomings and vulnerabilities is fundamental to the achievement of current systems (Kizza, 2013). The system security occurrences are expanding at an exasperating rate each year. As the multifaceted nature of these dangers expands, so do the efforts to establish safety required to secure systems. Endeavor server farm administrators and investigators, arrange directors and in addition other server farm specialists need to comprehend the standards of security so as to securely convey and oversee organizes today. Defenselessness Assessment Vulnerabilities Laurie (2002) characterizes defenselessness as shortcoming that is profoundly installed in each system and gadget and along these lines hard to evacuate. Such gadgets incorporate switches, workstations, switches, servers and in addition the security gadgets themselves. Vulnerabilities in system security can be considered as the easy objectives inside each system. These vulnerabilities are available in the whole system framework (LAN organize, singular gadgets and ISP) that make up the system (Laurie, 2002). Systems are by and large confronted with all or a portion of the key vulnerabilities or shortcomings to be specific; ... Get more on HelpWriting.net ...
  • 29. The Firewall Essay The Firewall WHAT IS A NETWORK FIREWALL? A firewall is a system or group of systems that enforces an access control policy between two or more networks. The means by which this control is accomplished varies widely, but in principle, the firewall is a pair of mechanisms, one that blocks traffic and one that permits traffic. Some firewalls emphasize blocking traffic, while others emphasize permitting traffic. The most important thing to recognize about a firewall is that it implements an access control policy. If you don't know what kind of access you want to permit or deny, or you let someone else or some product configure a firewall based on judgment other than yours, that entity is making policy for your whole organization. WHY ... Show more content on Helpwriting.net ... Generally, firewalls are configured to protect against unauthenticated interactive logins from the outside world. This protection, more than anything, helps prevent vandals from logging on to machines on your network. More elaborate firewalls block traffic from the outside to the inside but permit users on the inside to communicate freely with the outside. The firewall can protect you against any type of network–borne attack if you unplug it. Firewalls are also important because they are a single point where you can impose security and auditing. If someone attacks a computer system by dialing in with a modem, tracing the perpetrator is impossible. In contrast, the firewall can act as an effective phone tap and tracing tool. Firewalls also provide an important logging and auditing function, summarizing topics such as the kinds and amount of traffic that passed through it and how many attempted break–ins occurred recently. WHAT CAN'T A FIREWALL PROTECT AGAINST? Firewalls can't protect against attacks that don't go through the firewall. Many corporations that connect to the Internet are very concerned about proprietary data leaking out of the company. Unfortunately, a magnetic tape exports data just as effectively as the Internet. Many organizations whose management is terrified of Internet connections have no coherent policy about protecting dial–in access via modems. It's silly to build a steel door six feet thick
  • 30. ... Get more on HelpWriting.net ...
  • 31. Firewall And The Security Levels The modern world is being automated in all fields in various aspects. Automation is achieved by the software development and this result in a faster work accomplishment and also in an easy, efficient way. Meanwhile, this progress has also got proportionate threat of misusing the software. As the internet has extended its roots providing access to various networks and also may provide access to inappropriate users. So, it is necessary to protect these networks and this purpose is served by network security. The security levels can be classified into two they are low level security and high level security. Network security includes many components and firewall is one such component that protects a network from various threats. Everything in ... Show more content on Helpwriting.net ... For every firewall there are certain policies or a set of rules which describe the functionality of that firewall. Firewall follows these policies and makes decision, whether to allow or decline a packet to penetrate through the firewall. So, it is necessary to have a firewall which is subjected to follow a good set of rules or policies. Packet Filtering: Packet filtering is the basic purpose of the firewalls in the network. The key theme of the packet Filtering is that firewall shacks either in the host or in router and monitors the traffic and flow of the data. The monitoring of traffic in the network is performed with respect to the policies of the network security (Vadim Zaliva,2008). Firewall Simulation: Reproducing the behavior of the firewall is essential, especially in the field of testing of security and the audit for the security. To reproduce a firewall physically, one has to carry out the pattern of the security policies which are brought forth by the existing firewall and should be placed in the circumstance of the environment provided by the network. Not only this, simulation of the firewall also needs the construction of the organized model for the firewall and helping it with the files that consists of the terms and policies (Wool.A,2001). Policy Optimization is considered to be the most important field of research. Though the soul rules of tend to be very simple but they need to be correspond with the large chunks of packets ... Get more on HelpWriting.net ...
  • 32. How Technology Has Changed The Way Of Living Across The World Corporate Policy and Security Technology has changed the way of living across the world. Mostly, last 20 years period is a golden era for technology. People have accomplished several outstanding innovations in the field of technology. Modern technology is becoming very accessible not only for richest and developed city like New York but also for poor people and least–developed countries across the globe. It is a tremendous achievement in the field of modern technology. Today, people are no longer have to be on long queue or do long driving to get services from government agencies to the private big enterprises through small coffee shops. Technology has contributed to make our life easy and fast. However, it has created some major... Show more content on Helpwriting.net ... To protect web and data, companies must have a security policy. One of the best policies to protect the company from various vulnerabilities is password policy. Passwords are the must important element of the computer security. Week password may cause serious damage to the company. It is a just a similar as given the main door key to the house where the diamond and millions of cash are. So, the main purpose of choosing password policy is to set–up a standard for everybody to give a strong password. It will set–up the standard protocol to setup and handle the passwords of every individual that are related to the company including all users including contractors. These are the password policy steps must follow by everyone. вћўAll system–level passwords must be changed on at least a quarterly basis вћўAll production system–level passwords must be part of the global password management database. вћўAll users–level passwords must be changed at least every six months. вћўUsers accounts that have system–level privileges granted through group memberships must have unique password than the users have. вћўThere must be guidelines to create a standard password such as: – –Special characters, lower case, uppercase, punctuation, and number. –Limitation of characters. – Language of password – Choose special word or characters to remember easily for users but make it difficult to the outsiders (hackers). вћўOne–time ... Get more on HelpWriting.net ...
  • 33. Security And Beyond Information Technology To I.T. Security & Beyond Information technology has become a very dominant and ever growing industry in today's market. People have taken notice of it, and thus have invested quite heavily into it. Everyone is going online nowadays, more than ever before, but this is not just limited to people. Financial/Educational institutions, and various companies are all online in one form or another; being interconnected to the internet of everything. A prominent aspect of information technology is security, and it has been attracting a lot of attention as of late. IT Security has garnered many companies and individuals to invest so much into it; that it has essentially created an industry of its own. However, can all of this investment in IT Security really be justified? Let it be known that the internet is not secure. It was originally created by the US military for communication purposes, and since then has grown into network upon networks of computers and computer systems, for everyone to use. With the exponential growth that the internet has taken on, it's very hard to make it as secure as one would like. However, there are measures and protocols that are put in place to do just that, secure the internet. The internet is a combination of equipment, protocols and people, that when put together make everything just...work. It is a multi–layered system that depends on not just the technology itself, but those people who manage/operate it, and of course the investment it requires for ... Get more on HelpWriting.net ...
  • 34. Firewall Essay TABLE OF CONTENT ABSTRACT/SYNOPSIS A firewall is a product that sets up a security border whose primary undertaking is to piece or limit both approaching and active data over a system. These firewalls are fundamentally not compelling and suitable for professional workplaces to keep up security of data while it bolsters the free trade of perspectives. In this paper, i think about system firewall that helps the professional workplace and alternate systems that need to trade data over the system. A firewall ensures the stream of activity over web and is less prohibitive of outward and internal data and furthermore give inward client the fantasy of unknown FTP and www availability to web. 1. ... Show more content on Helpwriting.net ... It ensures protection by standing amongst system and the outside world. The information move in any direction must go through the firewall. 3.0 TYPES OF FIREWALLS : There are various types of technique which might be executed by a firewall. Some of them are as per the following: Packet channel Application gateway Circuit level gateway Proxy server 3.1 PACKET FILTER: It focuses at one packet at once and after that it applies some set of guidelines to every packet and afterwards it chooses to either forward the packet or dispose the packet. The standards depend on various fields in the IP and TCP/UDP headers i.e. Source and destination address, IP protocol field, TCP/UDP port number. Attackers can break the security with the assistance of following techniques: IP ADDRESS SPOOFING : In this kind of attack, attackers send a packet to inside network, by setting source IP address equals to IP address of inside client. SOURCE ROUTING ATTACKS: Here attackers determine the route that is trailed by the packet to move along the web with the goal that packet filter
  • 35. can be tricked to sidestep its normal checks. Solution: The solution of this attack is disposed of all packets that use this alternative. Advantages: It is Simple to execute. Low hardware cost, shabby boxes can do packet filtering. Rules set are less complex. 3.2 APPLICATION GATEWAYS With a specific end goal to control dangers when internal server permits connections ... Get more on HelpWriting.net ...
  • 36. Firewall Attack Essay In the world of computer and network security, there are myriad ways to launch an attack, which, from the perspective of a network, can usually be defined as "traffic that has vicious intent." There are infinite computer attacks that no firewall can prevent, such as those executed locally on the machine by a malicious user. From the network's perspective, there are numerous types of attack. Attacks can be grouped into two types: brute force and precision. Juniper Firewall has the capability to protect against both types of attack. Denial of Service (DoS) attacks are one of the most well–known network security threats under brute force attacks, which is largely due to the high–profile way in which they can ... Show more content on Helpwriting.net ... We can use flows or sessions as a way to determine whether traffic attempting to traverse the firewall is legitimate. We control the state –checking components resident in Juniper Firewall by configuring "flow" settings. These settings allow you to configure state checking for various conditions on the device. You can use flow settings to protect against TCP hijacking, and to generally ensure that the fire –wall is performing full state processing when desired. We take a case study of attack on a network and perform study of the detection of the malicious packets on a Netscreen Firewall. A new solution for securing enterprise networks will be developed here. 1.INTRODUCTION A number of malicious attacks which causes disruption to the processes has been increased due to an increase in the tremendous expansion in the field of computer networks. The main aim of network administrators is to provide continuous services to which they are intended to. Currently, the main aim of researchers is to provide secure network whereas, little intervention has been given to the quantification of network security which includes assessing of the vulnerability and malicious attacks to these systems. One of the huge networks which has more possibility to malware is an Enterprise Network which is a large and diverse network that connects both major and minor sites within an enterprise.Thesecurity and trustworthiness of Enterprise Networks have been a major concern in ... Get more on HelpWriting.net ...
  • 37. The Security Of A Home Network Technology Report Yu Lun Chou1730799 MADS 6638 Computer Security Admin. George Thucydides 4/26/2016 Table of content Introduction Inventory Vulnerability Test Protection Support Incident Response Introduction Information play an essential role in everywhere. For a company, in order to run the company well, information management is a necessary skill, and leaking information, odds are , causes significant damage to the company. Even though a private network will not have as great damage as an organization, people like to keep their privacy. Therefore, thesecurity of a home network is as important as the security of a company, and it is more universal. Hence this article will present how to built a ... Show more content on Helpwriting.net ... It provides for home, business, and school, and it provides free and payable products for different feature. According to the website Avast! Review– Top Antivirus Software, the free download version offers virus and malware detection, integrated password manager, and browser cleanup. In addition, Rubenking, a world–spanning purveyor of free antivirus protection, marks Avst high score in their independent lab tests and antiphishing test (2015). Different options for different feature with different price ↑ The feature list in different versions ↑ From the website About Adblock Plus, " Adblock Plus is a free extension that allows you to– among other things – block annoying ads, disable tracking and block domains known to spread malware"(2016). There are more illustration about the feature of
  • 38. Adblock Plus from the same website: allow acceptable ads, disable social media buttons, and typo protection (2016). Due to people experience the inconvenience while surfing the internet the ads pops out and the more important point the adware attack, using Adblock Plus is the appropriate choice. The Schematic diagram of Adblock Plus ↑ After installing Avast and Adblock Plus online, it shows in extensions ↑ Moreover, Avast and Adblock Plus are available from the internet and it is free. Therefore, people can reinstall these softwares anytime. Vulnerability Test According to the lectureNetwork Security Assessment(2007), in order to eliminate the risk of vulnerabilities, ... Get more on HelpWriting.net ...
  • 39. Using A Virtual Private Network ( Vpn ) Section 1.0 The world is constantly changing especially in technology. Each day new software and hardware is created to accomplish tasks that were not possible before. These new software's and hardware's offers new problems to come with these new accomplishments. Businesses are constantly looking for ways to make their employees more efficient. Allowing employees to communicate not just in the office, but remotely is being a requirement at this day and time. This company could make use of a Virtual Private Network (VPN) that routes through the firewall. The VPN would allow easy access to the company network for authorized employees. A VPN would allow the company to have employees that telecommute, work from home, or remote employees. It would allow our employees that travel frequently – like salesmen – to connect from anywhere they may be. The VPN would allow for a more flexible work day, and help work get done when it needs to be done instead of during normal business hours. The VPN will run through the company firewall to help limit the traffic through to legitimate business traffic. The company must first be aware and understand the risks of a VPN and firewall. This knowledge will help the company make the right decision for this technology. A VPN and firewall solution is different for every network, and must be customized to this company's network. There is also risks to not using these tools. It is important for the company to see this risks as well, so ... Get more on HelpWriting.net ...
  • 40. Network Security And The Internet The world is more connected now than ever since the birth of the Internet and with the new networking technology coming out, will continue this way. There is a large amount of personal, business, and government information on the internet and network infrastructures. Network security is becoming of great importance because of the attacker 's ability to steal this information that can be easily acquired through different means of attacks. The internet itself along with network infrastructures has many security risks in it. Knowing what attack methods are out there allows users a chance to defend against them. Learning about the history of the Internet along with network attack and defense allows users and anyone operating within the digital... Show more content on Helpwriting.net ... Knowing this information will help any user or organization build a standing defense from an attack. Malware dates back to the 1960s. The systems were slow, and computer use was rationed among different groups of users. Students were often the last ones to be able to use the internet so they invented tricks such as writing computer games with a Trojan horse inside to check whether the program was running as root, and if so, created an additional privileged account with a known password. By the 1970s, large time–sharing systems at universities were the target of pranks involving Trojans. In 1984, a classic paper by Thompson in which he showed that even if the source code for a system were carefully inspected, and known to be free of vulnerabilities, a trapdoor could still be inserted. His trick was to build the trapdoor into the compiler. If this was recognized that it was compiling the login program, it would insert a trapdoor such as a master password that would work on any account. So the next step is to see to it that, if the compiler recognizes that it's compiling itself, it inserts the vulnerability even if it's not present in the source. So even if you can buy a system with verifiable secure software for the operating system, applications and tools, the compiler binary can still contain a Trojan. The moral is that you can't trust a ... Get more on HelpWriting.net ...
  • 41. Advantages And Disadvantages Of Log Management iii.COMPUTER SECURITY LOG MANAGEMENT A log is actually the detailed record of all the events occurring in any organization. They consists few entries: every entry is assigned for specific event that has occurred within a system or network. Many logs within acompanies composed of few records related to computer security. These computer security logs are generated by sources, including software security, such as antivirus software, firewalls, and intrusion detection and prevention systems; operating systems on servers, workstations, and networking equipment; and applications. A fundamental problem with its management (log management) that happens in many companies is effectively balancing a limited quantity of log management resources which ... Show more content on Helpwriting.net ... However, the firewall is still a major threat to network traffic continue to work to stop the lower layer. It can also be a measure of protection from application–layer firewall and other network security technologies complement the capabilities. There are different types of firewalls that analyze each with different capabilities of network traffic and allow or block certain instances, by comparing traffic characteristics to the existing guidelines. To understand the capabilities of any type of firewall and design of firewall policies and the acquisition of firewall technology, the requirements of an enterprise are effectively addressed to achieve critical protection for network traffic.This document provides an overview of firewall technologies and discusses their security capabilities and relative advantages and disadvantages in detail. It also provides examples of where firewalls can be placed within networks and the implications of deploying firewalls in particular locations. The document also makes recommendations for establishing firewall policies and for selecting, configuring, testing, deploying, and managing firewall solutions. To improve the effectiveness and security of their firewalls, organizations should implement the following ... Get more on HelpWriting.net ...
  • 42. Firewalls And Infrastructure Security Firewalls and Infrastructure Security A firewall is a network device, hardware, software, or a combination of the two, whose purpose is to enforce a security policy across its connections. It is comparable to a wall that has a window where the wall serves to keep things out, except those permitted through the window. Asecurity policy acts like the glass in the window; it permits some things to pass, light, while blocking others, air. The heart of a firewall is the security policy that it enforces. Security policies are a series of rules that define what traffic is permissible and what traffic is to be blocked or denied. These are not universal rules, and there are many different sets of rules for a single company with multiple ... Show more content on Helpwriting.net ... Advanced firewalls employ stateful packet filtering to prevent several types of undesired communications. Should a packet come from outside the network, in an attempt to pretend that it is a response to a message from inside the network, the firewall will have no record of it's being requested and can discard it, blocking access. As many communications will be transferred to high ports, above 1023, stateful inspection will enable the system to determine which sets of high communications are permissible and which should be blocked. The disadvantage to stateful inspection is that it takes significant resources and processing to do this type of inspection and this reduces efficiency and requires more robust and expensive hardware. This type of inspection is essential in today's comprehensive networks. As they are in routers, switches, servers, and other network devices, Access control lists are a cornerstone of security in firewalls. Just as you must protect the device from physical access, Access control lists do the same task for electronic access. Firewalls can extend the concept of Access control lists by enforcing them as well at a packet level when packet–level stateful filtering is performed. This can add an extra layer of protection, making it more difficult for an outside attacker to breach a firewall. Some high–security firewalls also employ application layer proxies. As the name ... Get more on HelpWriting.net ...
  • 43. Visualization And Simulation Computer and Networking Visualization and Simulation (CANVAS) is a Cybersecurity annual event in which students compete to learn and describe the vulnerabilities in a pretend system situation. The 6th Anniversary was held at Regis University's Denver Tech Center on April 1, 2011. The students were provide with the essentials to explore the computer–generated network for vulnerabilities, and what countermeasures they would use to prevent this from occurring in the future. During this event the students' were provided with a simulated network with a diagram. While analyzing the network for vulnerabilities, risks, threats and ways to secure the network, the below information are my findings. Vulnerabilities: When analyzing CANVAS for... Show more content on Helpwriting.net ... By using the Colorado Energy Company diagram as their simulator project, allowed the students to analyze their systems for vulnerabilities, threats as well as risks. The network system was attacked due to possible malware, no firewall, network sniffing as well as spoofing. Having the above mentioned ways of securing the Colorado Energy Company's network may not prevent an attack, but it definitely will make it more difficult for a potential attacker to gain access into their ... Get more on HelpWriting.net ...
  • 44. Essay on Identifying Potential Risk, Response, and Recovery With identifying potential malicious attacks, threats, and vulnerabilities, measures need to be taken to deal with the malicious activities. A strategy is needed to deal with each of the risk of the malicious attacks and threats in the previous memo. Also controls will need to be setup to help mitigate those risks of the attacks. A strategy and controls need to also be setup to mitigate each of the vulnerabilities from the previous memo to help protect the computers and network for the business. There are different strategies that can be used for dealing with the risk of a malicious attacks and threats. The strategy used will depend on the type of attack and threat, the strategies are risk mitigation, risk assignment, risk acceptance,... Show more content on Helpwriting.net ... Administrative controls are to ensure people understand and follow the policies and procedures. Preventative controls try to stop threats from trying to use a vulnerability to gain access to the network or computers. Detective controls identity a threat that has hit the network and computers and corrective controls reduces the effects of a threat on the system. The most common malicious attack and threat are from viruses and other malware. There are different types of viruses to protect a network and computers from and viruses can get into the network in different ways, mostly by email and websites on the internet. The best strategy for dealing with the risk for viruses and other malware would be risk mitigation. Viruses and other malware cannot be avoided or transferred to another business since our computers and network is here in the business for people to utilize. Viruses are also not an acceptable risk, the damages from viruses will outweigh the money spent to protect the network and computers. For these reasons, the strategies of risk assignment, risk acceptance, and risk avoidance are not appropriate to use to mitigate the risk. Antivirus software can be purchased and placed on the computers to help prevent viruses' infections would be cheaper than money spent on the time techs to remove viruses from all systems and replace any hardware that may be damaged by the virus. The controls needed to mitigate the risk of virus and ... Get more on HelpWriting.net ...
  • 45. Advantages And Disadvantages Of Honeypots Abstract–Computer Networks and Internet has become very famous nowadays since it satisfies people with varying needs by providing variety of appropriate services. Computer Networks have revolutionized our use of computers. Online bills, shopping, transactions and many other essential activities performed on the go by just a single click from our homes. Though it is a boon in this era, it also has its own risks and weaknesses too. Industries need to tussle to provide security to their networks and indeed not possible to offer a cent per cent security due to the intangible intelligence of hackers intruding into the network. This paper exploits the concept of honeypots for providing security to networks of industries which may not have custom... Show more content on Helpwriting.net ... 1. INTRODUCTION The Internet is a network of networks. It is based on the concept of packet switching. Though the services offered by Internet are extensively used from a layman to multi–millionaire it also has its own defects. Many attacks on Internet are being identified and reported. Some of the common types of network attacks are eavesdropping, data modification, identity spoofing, password–based attacks and denial of service attacks. To overcome all these types of attacks an organisation usually installs an intrusion detection system to protect the confidential data exchanged over its network. The local network is then connected to the Internet thereby availing the employees to be online on the fly. Information security has three main objectives namely 1. Data confidentiality 2.Data integrity 3. Data availability. Data confidentiality ensures that the secure data can be accessed only by authorized persons. Data integrity allows secure modification of data. Data availability ensures that the data is available readily to authorized persons. Small scale industries often do not prefer on intrusion detection systems due to its installation and maintenance costs. Honeypots and Honeynets are an efficient alternative for such ... Get more on HelpWriting.net ...
  • 46. The Importance Of Firewalls On The Operation System This paper describes about firewall management as one of the components in information assurance, which elaborates the importance of firewalls on the operation system. Illustrating the example of the online transaction that can use firewall management to mitigate the risks of severe consequences from cyberattacks. Besides, there are some limitation of firewalls as well that we have to consider in operating the system even if the firewall is protecting the system. Introduction Nowadays, information assurance (IA) plays an important role in every business sector, which is the key to dependable management decision–making, users trust, business continuity and good corporate governance (Ezingeard, McFadzean, & Birchall ,2005). As quality and ... Show more content on Helpwriting.net ... Integrity is to ensure that information is not corrupted. Lastly, availability is to ensure that information is always ready to support the demand of users. There are many diverse kinds of information assurance services in the market nowadays, which provide independent validation and verification services with innovative software or applications towards the organization's system (Ezingeard, McFadzean, & Birchall, 2005). According to Managed Security. (N.d.), Dell security service provides capability of protection towards the network, essential internal asset, remote users and important information. In this paper, I would like to expound one of the critical services as information assurance, named firewall management, which is the important component in the part of information assurance in every organization. Firewall Management What is Firewall Management? According to Managed Firewall (N.d.), Firewall management is a security service which prevent unauthorized access and costly breaches in the organization's system. This service requires a high level of expertise in order to manage and control the system, in which the network traffic must be monitored incessantly to protect from cyberattacks before the devastation is done. As mentioned in Harrison (2011), it defines firewall as gatekeepers for the corporate network and data center perimeters. The procedure of Firewall is to control and scan the network ... Get more on HelpWriting.net ...
  • 47. The Problem Of Computer Security Computer security has been creating issues in the news lately. Almost every week, corrupt forces try to take down high–profile websites. Companies lose millions of dollars and suffer damage to computer systems. As a result, large companies spend thousands of dollars on security systems and products to protect the doors to their corporate networks. It 's hard to set a barrier for the intruders. Most systems administrators and users have built up a tolerance to attempted hacking. They have accepted intruders as the norm. An intruder attack is only one side of security .Viruses are another big security threat; the fact that they spread easily only increases their infestations. For example, worm viruses spread when users open email attachments, which cause the virus to email itself to the user 's entire contact list. Other Trojan horse viruses can come into your system and leave a back door for intruders who will use your computer as a Threat Machine to spread or to make countless attacks on other users machines. Because the operating system plays an important role in a computer 's functioning, and because it 's the only layer between the machine 's available resources and its users, it 's critical that the OS resists compromise. Hardening is this process of establishing a strong security wall against unknown threats. System administrators harden against whatever they think could be a threat. This guide is designed to provide a reference for system administrators who need to ... Get more on HelpWriting.net ...