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Network Security Applications
Network Security Applications and Countermeasures |Domains |CIA Functions | | |Ethical Hacker |User domain |Confidentiality | |Intrusion Detection
system / intrusion |WAN Domain |Integrity | |prevention system | | | |Access controls |User Domain |Confidentiality | |Failover server |Systems
/ Applications Domain |Availability... Show more content on Helpwriting.net ...
Firewalls are set up on computers to help protect computers and other devices from attacks from potentially harmful websites and other resources.
Proxies are servers that act as a middle man for computers. They allow users to make indirect connections to other servers. The LAN–to–WAN domain
is where the infrastructure connects to the Internet. Updates, firewalls and proxies will help to keep things running and help to keep it protected. The
fifth domain is the WAN domain. In this domain, the network security application that is apart of it is the intrusion detection system/intrusion
prevention system (IDS/IPS). This device monitors the system for malicious activities and reports it back (Kim & Solomon, 2012). The WAN
Domain connects to remote locations and using the IDS/IPS is crucial because it will help to remote if any outside activity is trying to access the
system that should not be. The sixth domain is the Remote Access Domain. In this domain, the network security applications that is apart of it is
Proxies. Similar to LAN–to–WAN domain, proxies help to allow users to connect to server through another server. Remote access allows users to
connect to the server remotely and Proxies give a user the opportunity to use a proxy server to do this. The seventh domain is the Systems/Applications
Domain. In this domain, the network security
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The Problem Of Computer Network Security
Introduction
Computer network security has never been as critical as it is today. The news is littered with the widespread incidents of hacking and cyber theft in
the financial, entertainment, and retail industries, and more recently in our military. A recent survey, conducted by Kaspersky Lab, a leader in
endpoint protection solutions, found that 94% of all companies surveyed experienced a cyber security issue (Kaspersky Lab, 2014). Furthermore, a
recent study has found that the average cost of a data breach to a company was $3.5 million, a 15% increase from the previous year (Ponemon
Institute, 2014). In this day and age, the cost of a data breach, not only to a company's bottom line, but to their reputation, would be extensive.
Statement of the Problem
Recently, Acme Corporation experienced a network compromise which resulted in the possible compromise of the personally identifiable information
(PII) of their employees and clients. As a start–up company, many technological issues were overlooked in the interest of getting the business off the
ground. Significant emphasis was placed on acquiring the most up–to–date and cutting edge hardware and software, unfortunately, only mediocre
consideration was placed on network security. This report will examine the factors that contributed to vulnerability and will identify the solutions that
must be undertaken to secure the company network and protect it against future cyber–attacks.
Computer Network Security Analysis
Forensic
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The Threat Of Network Security
There are threats to network security that can compromise your computer systems. Viruses are one of the top security threats in the technology
industry. A virus is a program or a code that is loaded into your computer system without your knowledge will run against your wishes (Beal, n.d).
Viruses can also replicate themselves. All computer viruses are manmade and a virus can make a copy of itself several times and easy to create
(Beal, n.d). Mark Vernon wrote that 72% of all companies have received infected e–mails or files last year and for larger companies the percentage was
83% (Vernon, 2004). The top viruses in malignancy are Worms and Trojan Horses (Vernon, 2004). Another threat to network
security is malware.
Malware (malicious software) is a annoying or harmful type of software that is intended to secretly access a device without a user's knowledge.
There are different types of malware, which include spyware, phishing, viruses, adware, Trojan horses, worms, ransomware, rootkits, and browser
hijackers ("What is Malware and how to remove it | Cyber security," n.d.). Malware gets access to your device through the internet, email, hacked
websites, toolbars, music files, free subscriptions, toolbars and anything downloaded from the web ("What is Malware and how to remove it | Cyber
security," n.d.). Spam is also another threat to network security. Spam is a unsolicited message that advertises a service or product. Spammers target
email accounts but can also be found on
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The Security Of Network Security And Web Security
The network security professionals across the globe have provided details about the attacks so that the security software can be improved, however
there are some shortcuts that can improve the security for the time being or if the web host has a difficulty in procuring modern security software, these
techniques can help the web host to increase the security of both the web server and clients that are connected to the web server.
The CRIME and BREACH attack both target compression that is either HTTPS or HTTP level, these attacks also work against a number of other
compressions and connections but since HTTPS and HTTP are the most used compression levels, the security should be bolstered to protect them. The
compression can simply be ... Show more content on Helpwriting.net ...
The security can also be bolstered by hiring alleged attackers that can point out the weaknesses that are exploited and then these weaknesses can be
strengthened by the security professionals.
There are also various techniques that can stop the attacker to access the LAN router so that there is not attack initiated from the Wi–Fi of a client
computer. The LAN router in public places are not extensively secure and the attackers either use these networks to initiate attack on others so that they
cannot be traced or they can simply attack the users on this network to leak information that is important.
The protection of HTTPS connection should also be upgraded or security add–ons should be created to protect the integrity of the browser so that the
client cannot be affected by the malicious JavaScript that is sent by the attacker. There are browsers like Chrome and Mozilla which are not affected
from the attack as they have extensively worked together to ensure that security is not penetrated or bypassed by the attacker. The other companies
should also work in cooperation with each other to ensure that their security is paramount and that attackers are minimised.
The JavaScript sends requests to a web server that is created by the attacker to capture the information from the client so the client also needs to
employ security
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The Components Of Lifecycle Of Network Security
The present era can be referred as a digital era as well, which has created various opportunities for organizations to conduct business and deliver
different services over the internet. The cyber security is basically a practice that helps organizations minimize risks, helps the security operations in an
effective manner, provide authentication and access control for resources, guarantee availability of resources and also helps to achieve regularity for
enhancing own business network. The basic components of the security include; confidentiality (maintaining privacy of the data), integrity (detecting
the data is not tampered), authentication (establishing proof of identity, non–repudiation (ability to prove that the sender actually sent the data),
availability (computer assets are available to authorized parties when needed), and access control (access to information resources are regulated). The
problems of network security include:
increase in network attacks
increased sophistication of attacks
lack of awareness
lack of security policies
lack of proper laws.
The components of lifecycle of network security are plan, design, implement, operate, and optimize. Information / Internet threats:
Internet threats are malicious software programs designed to target users when they are online.
Threat is a potential occurrence that might compromise the assets. An asset is a resource of value. The threat is linked to vulnerability (vulnerability is
a weakness in the
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The Problem Of Network Security
Network security has never been so critical for the last decades. Companies nowadays are at a potential risks. The use of data is essential for business
needs and user's education is a priority. Users allow companies to manipulate their data on a trust relationship basis. A startup healthcare company has
many challenges in the market as new cyber threats come every seconds which impel network security administrator to enforce strict rules and
measures. A company information technology structure set up will determine its protection. A risk analysis is important to discover flaws and
recommend measures that administrators need to take. As for any startup company, the needs to a good information technology structure plan is
paramount. ABC Healthcare is new with 50 employees. According to fig.1 which illustrates the ABC information technology structure the company is
at great risk. The company is equipped with an ISP modem/router that is directly connected to a switch. The ABC might have installed great antivirus
software to protect their system against cyber–attacks. Nevertheless, managing healthcare data in a network with only antivirus is not enough. An
antivirus offers great protection and is an effective way to protect against viruses. However, a firewall is a necessary tool to help keep attackers off the
network based on rules set implicitly to filter the web traffic and protect files. While antivirus is a great tool to help keep you safe, adding a firewall
will give the
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Manage Network Security
How Managed IT Service Providers Enhance Network Security
As technology and the Internet continue to exponentially grow, unscrupulous individuals continue to create new security risks for organizational
privacy, confidentiality and data integrity. Because almost all network–based services and applications pose some level of security risk, personal and
business information must protected through enhanced security systems and controls. Managed IT service providers often offer the highest levels of
security that protect assets, maintain integrity, ensure availability and ensure confidentiality.
The Urgent Need for Enhanced Security
The Federal bureau of Investigation (FBI) states that billions of dollars are wasted every day because of various ... Show more content on
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Budgeting for technology is difficult when IT equipment may sudden experience problems, but managed IT service provides take care of all
maintenance, so organizations can better budget for service costs and prepare for upgrades. Many managed IT service providers incorporate repair and
service work into the contracts.
Most managed IT service organizations use web– and cloud–based technology, so there is plenty of data to be tracked trended. Comprehensive IT
reporting helps management allocate budgets, monitor staff, understand trends and review problem remediation. Online client dashboards often
provide access to helpful tools and customizable reports. Organizations can still maintain dedicated IT person, but they will be freed from dealing with
daily troubleshooting and maintenance.
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Network Security And The Security
Hospital Network Security With a multitude of changes occurring in the technology field, it is critical that hospitals maintain the highest levels of
security for their internal network as well as their public access network. Hospitals contain vital information about patients, treatment styles, employees
and staff, as well as pharmaceuticals that are kept on the premises. The importance of protecting this information cannot be understated and a breach in
security could cause a breakdown in all areas of the network, having a catastrophic effect on the entire hospital. One of the most important aspects of
network security is a strong network security model. The network security model consists of seven layers that work together to provide the strongest
possible security for the network. The seven layers are the physical layer, the vlan layer, the software layer, the user layer, the administrative layer, and
the IT department layer. A network security model that is well thought out and designed allows the network security team to analyze and maintain the
network and determine if there has been a breach and the location of the breach. The first layer of the network security model, the physical layer,
pertains to physical security. This entails the prevention of a physical attack on servers and other devices connected to the network. The physical layer
is one of the most important layers of protection because if it is breached, the layers beneath it will
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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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Information Security And Network Security
In information security, computer security and network security an Asset is any data, device, or other component of the environment that supports
information–related activities. Assets generally include hardware (servers and switches), software (e.g. mission critical applications and support
systems) and confidential information. Assets should be protected from illicit access, use, disclosure, alteration, destruction, and/or theft, resulting in
loss to the organization. Security assets are quite helpful for large or small companies and have many different ways of protecting one's information.
It is quite common to find many individuals involved in compromising a company's intellectual property. Suspects would most likely be a current
/former employee, trusted customers, or competitors. Therefore security assets are major in protecting and securing a company's information. The first
step to securing intellectual Property is management structure. This will guarantee that your Intellectual Property will run with a few protection
measures implemented. The second step is Operational Security. This will enable a background check on vendors and third parties. Also, this will go
over existing hiring and departure policies for employees. The third and final step to securing intellectual property is Cyber security. This will put a
stop to network intrusion, safeguard mobile device security, and remote access security. Protecting a company's intellectual property is very important.
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Computer And Network Security Incidents
Purpose Computer and network security incidents have become a fact of life for most organizations that provide networked information technology
resources including connectivity with the global Internet. Current methods of dealing with such incidents are at best piecemeal relying on luck,
varying working practices, good will and unofficial support from a few individuals normally engaged in central network or systems support. This
approach undoubtedly leads to inefficiencies and associated problems with respect to: * Duplicated effort * Inappropriate actions * Poor co–ordination
* Confusion – No obvious authority, identifiable responsibilities or overall management * Tardy incident detections... Show more content on
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It is recommended that the new permanent staff posts be assigned to the Computing Service department and based within one of the existing central
support teams. Additional central support team resources would be drawn from the following: * Network team – at least 2 members * Central team –
at least 2 members Responsibilities The primary responsibilities of the Core team would be to maintain the day to day operation; provide advice,
monitor for incident alerts and reports, manage incident investigations and provide follow up analysis and reports to Corporation Techs management
committee; in detail the Core team would be responsible for the following support activities: * Provide availability for contact and incident response *
Produce an incident classification scheme based on risk assessments for Information Technology resources * Work with Computing Service central
support teams to introduce proactive measures for incident avoidance or early incident detection * Monitor external and internal sources for alerts and
incident reports * Notify and consult with campus IT support staff, network and systems administrators * Perform
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Network Security : A Secure Platform For Computers
Networking security the process of taking physical and software preemptive evaluations to protect the underlying network foundation from
unauthorized admittance, misuse, glitch, modification, demolish, imprudent revelation, thereby creating a secure platform for computers, users and
programs to implement their permitted critical functions within a secure environment. Network security has become significant due to the patent that
can be obtained through the Internet. There are essentially two different networks, data networks and synchronous network composed of switches. The
Internet is considered to be a data network. Since the prevailing data network resides in computer based routers, information can be accessed by special
programs, such ... Show more content on Helpwriting.net ...
Confidentiality prevents the access of the unauthorized system and person to the sensitive information of an organization. Due to the increasing
contentious and competitive business environment, confidentiality is very important for an organization. The failure in protection of confidentiality of
a business can cause serious issues if the confidential information gets into the wrong hands, they can use this information for illegal activities such as
scam, fraud and stealing money which can result in loss of productivity. Integrity is information that cannot be changed slightly and has to be reliable.
Although millions of dollars have been invested in this sector, but still the information in the warehouses is inaccurate and sometimes incompatible
with its origin. As the result the data warehouse faces failure, low acceptance and confidence of the clients and users. Incorrect and incomplete
information decrease the operational ability; become the cause of incorrect business decisions. Availability means, the required data and information
must be available and accessible to the authorized personals at anytime and anywhere. For example, the information is in the server, but the server is
overloaded and not working properly or the server crash and no one able to access the information needed. It is important to understand that the
information unavailable not only in case when it is destroyed or lost, but also
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Network Security Practices Essay
Today's corporate infrastructure is not the same as it was 10 years ago. In the past you were able to control the amount of attacks on a network
because of the reasonable number, which is not the case today. At any given time an organizations network will be attacked or try to be attacked
several hundred times in one day. For larger more well–known organizations this number could grow significantly. To ensure your organization is not
one of the ones on the 10'oclock news you have to ensure you have proper security practices in place to secure your network.
Most people in the security field agree that good security policies are necessary to keep intruders out and keep the users along with the information on
their network safe. The best way ... Show more content on Helpwriting.net ...
Having this type of accountability will help you in having a better understanding and provide for a good foundation for enforcing security across the
organization. This area should also cover the different types of data each person handles on a daily basis. It should clearly outline the different
categories that data will fall into whether it be internal, external, general use or confidential. By doing so you now allow the employees to have a better
understanding of what data they can manipulate and data that has to stay the same.
2. Remote Access Policies – users are always going to want to access the office network from a remote site. We have to ensure that there are policies
in place that allow them to do so but in a safe manner. If they are going to remotely access the network it has to be done in accordance with the
security policies of the organization and not on their terms. This should include using a laptop or remote connection software that has been
pre–approved by the organizations security team, keeping IP's in a safe place, making sure that if they are accessing the network from a laptop to
ensure that hard drive is encrypted. This will prevent anyone from gaining access the sensitive information if it is ever lost or stolen. Lastly not
everyone should be granted remote access to the network; this privilege should only be given to people who have a legitimate need for it.
3. Network Connected Devices – Once a device is connected to the
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Network Security And The Network
Abstract
Network security is a broad term used to refer to processes and procedures that are configured by a company's network administrator to provide
visibility and prevent denial of service, unauthorized access, modification and exploitation of the corporate network or respective resources. The
resources refer to files or computer programs available on the corporate network infrastructure. The infrastructure comprise of corporate software and
hardware resources that facilitate communication, connectivity, management and operations within the corporate network. (Vacca, 2014)
This infrastructure thus provides a communication path between applications, users, services, processes and external networks like the internet.
Typically, a... Show more content on Helpwriting.net ...
The network security manager can equally use intrusion detection systems and anti–virus software to prevent unauthorized access and blocking
harmful viruses and malware from entering a network respectively. This paper however, does not focus on these approaches but primarily focuses
on how firewalls enhance network security. A firewall is a security technology designed to avoid unauthorized access to or from a private network.
Firewalls can be placed in both hardware and software, or can also be placed in both hardware and software. Firewalls are usually used to prevent
unauthorized access on a network. All messages entering or leaving the network go through a firewall, the firewall analyses all the messages and then
blocks the messages that do not meet the security standards. The administrator sets the security standards which packets need to meet, he/she will
decide which packet is suitable to pass through the firewall. (Webopedia.com, 2017), (Services, 2017). Once an administrator has set up a policy, it
then needs to be tested to determine if the firewall has been correctly implemented.
Introduction
Network security has become a major concern in the computing industry, including organizations, personal users and the military. The reason for this is
due to the large number of security threats that occur on a daily basis. The internet architecture itself allows many threats to
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Wireless Network Security
Reis Barrie
Research Paper
CNT4514
Wireless Vulnerabilities
The world of wireless networks as we all know is one of the most rapidly growing areas in our world today. With the massive amount of data that is
going on, "the cloud" the security of all of our data is questioned. As well with so many of our day to day tasks relying on our wireless capabilities it
make you wonder how safe is it to rely so heavily on something. We have to ask the questions what are the key vulnerabilities of wireless networks
and even just of networks in general. Different types of networks have different levels of safety and it is a good idea to know not only which are safe
but the vulnerabilities of said networks to keep our information out of the ... Show more content on Helpwriting.net ...
As well as PlayStation we the same group hit another gaming community named Blizzard and launched many DDoS attacks taking down their
online gaming servers for hours at a time over the period of a few days. The group that took responsibility was called LizardSquad, they have also
been known to target a website called KrebsonSecurity[dot]com. On KrebsonSecurty they have proof of people from the LizardSquad organization
trying to find new "hackers" which is a debatable term for someone that DDoS's considering DDoS'ing requires virtually no skill, and asking for
them applicants to take down one of two sites. If they could accomplish this task then they could join the LizardSquad group of "hackers" or as
KrebsonSecurity calls them, "a gaggle of young misfits that has long tried to silence this web site." Another example of DDoS is a more drastic when
the hacktivist anonymous used DDoS attacks in 2006 and 2007 to cost Hal Turner and his radio show that some considered to be politically incorrect
thousands of dollars in bandwidth bills that his radio show eventually went under. Hal Turner eventually attempted to sue the hacking group but the suit
was soon dropped by the courts. Another growing section of wireless technologies is Bluetooth. Every day a new Bluetooth device is released, these
devices are security nightmares for the most part. Bluetooth has been proves to have
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Network Security Essay
Network Security Network security is a problem that network administrators face. It is something that network administrators should keep a careful
eye on. For example, if the home network does not have any security measures in place, then the person is at a high risk of data loss due to hacking.
Network security is something that businesses do not take very lightly because they want to protect their valuable information and network resources
from hackers. It is a problem because of unauthorized use and can be resolved by increasing the security encryption levels. Networks, including the
internet, are one of the most essential things to businesses. Without computer networks, companies would be lost and would not have a way to... Show
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Expenses make it difficult to totally replace old systems with new ones. Beyond the purely financial costs involved, doing so often requires retraining
thousands of employees and making changes to long–established systems and processes. The bad thing about many legacy systems these days is that
they were not made to function reliably with different systems or to be accessed by means of an internet connection. For example, while almost all
the enterprise wireless local area network chipsets are using Atheros Xspan chip sets then their access points, their power claims may vary wildly."
("10 Problems" 36) Companies are relying on their networks for more tasks than ever before. At many places, wireless access points,
voice–over–internet–protocol phones and security cameras are allowing many businesses options, along with the opportunity to run phone and even
electric lines. (10 Problems 36) Network security is a problem for many reasons. Government intrusions are one of the many network security
problems, hackers are also one of the causes of network security problems in the U.S as well as low encryption. "Every time you send an e–mail or a
text message, search Google, or read a Web page, there is a good chance that National Security Agency (NSA) computers are tracking you, all as part
of the government's 'war on terror' (Perry 1). Anything that is said or
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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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Network Security : A Security Platform For Users,...
NETWORK SECURITY
VIPUL KUMAR KOTHIFODA
ILLINOIS INSTITUTE OF TECHNOLOGY
A20357836, vkothifo@hawk.iit.edu
ABSTRACT
In today's world Network Security plays a vital role to protect the underlying network infrastructure from unauthorized access, malfunction, modification
and improper disclosure. Network security helps to create a security platform for users, programs, and computers. Security became a major concern
with the explosion of the public internet and e–commerce, private computers and computer networks. This white paper outlines the overview of
network security threats and its solution which protects you and your organization from threats and malware and confirms that data travelling across
your network is safe.
Keywords: [Click ... Show more content on Helpwriting.net ...
Network Security involves authorization of access to data in a network because each and every client who is working on the internet wants security
and sometimes he or she do not know that someone else may be an intruder collecting the information. The vast topic of network security is scrutinized
by researching the following.
1.History of network security
2.Attacks and Prevention Method.
3.Role of Network Protocol
4.Pros and Cons
HISTORY OF NETWORK SECURITY Securing information over had started in the late 1960s when network only occurred in the sense of huge
mainframes and several networked terminal. Network security has advanced day by day due to increasing faith on public networks not to reveal
personal as well as professional information. The first crime was committed by Kevin Mitnick. This was the largest computer–related crime in U.S.
history. In this crime people losses eighty million dollars from different companies. In the 1970s the birth of internet takes place in 1969 by Advanced
Research Projects Agency Network (ARPANet) is commissioned by Department of Defense (DOD) for research in networking. In the very beginning,
ARPANET succeed. The Inter Networking Working Group (INWG) becomes the first of multiple
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Essay on Network Security
Network Security
In the last decade, the number of computers in use has exploded. For quite some time now, computers have been a crucial element in how we entertain
and educate ourselves, and most importantly, how we do business. It seems obvious in retrospect that a natural result of the explosive growth in
computer use would be an even more explosive (although delayed) growth in the desire and need for computers to talk with each other. For quite some
time, businesses were primarily interested in sharing data within an office or campus environment, this led to the development of various protocols
suited specifically to this task.
Within the last five years, businesses have begun to need to share data across wide areas. This has ... Show more content on Helpwriting.net ...
Unfortunately, none of the current solutions scale particularly well. Two general approaches dominate this area:
1. Virtual Private Networks: When a virtual private network is implemented, the lowest levels of the TCP/IP protocol are implemented using an
existing TCP/IP connection. There are a number of ways to accomplish this which tradeoff between abstraction and efficiency. The advantage this
gives you in terms of secure data transfer is only a single step further away. Because a VPN gives you complete control over the physical layer, it is
entirely within the network designer's power to encrypt the connection at the physical (virtual) layer. By doing this, all traffic of any sort over the
VPN will be encrypted, whether it be at the application layer (such as Mail or News) or at the lowest layers of the stack (IP, ICMP). The primary
advantages of VPNs are: they allow private address space (you can have more machines on a network), and they allow the packet encryption/translation
overhead to be done on dedicated systems, decreasing the load placed on production machines.
2. Packet Level Encryption: Another approach is to encrypt traffic at a higher layer in the TCP/IP stack. Several methods exist for the secure
authentication and encryption of telnet and rlogin sessions (Kerberos, S/Key and DESlogin), which are examples of encryption at the highest level of
the stack (the application layer). The advantages to encrypting
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Security Threats Of Network Security
As the technology is growing the security threats are also increasing at higher rate. So, as to protect an organization from such network security
threats severe actions and several steps have to be taken by network security administrators. In any large organization that is having large number of
big servers, firewalls and interconnected network of hundreds of computers, security is one of the most important aspects so as to secure its network
from intruders. Within the organization, all the computers and devices are interconnected in a LAN network or using a WLAN (Wireless Local Area
Network). So, the most important task of network security administrator to secure its internal as well as external network from intruders because there
are several ways intruders can sniff the network and resulting in heavy loss of data. There are several threats that can affect network security of an
organization such as: Wireless Sniffing, DoS (Denial of Service), sniffing of VoIP network, trojans and unauthorized access to FTP server. Wireless
Sniffing and potential measures to secure wireless Networks
In today's business scenario, within the organization most of the operations taken place over a wireless network such as transferring data between
systems using wireless, accessing internet and sending Mails over Internet. Large number of rooters is used for providing internet access and wireless
access to computers. Consider a situation, in which if one of the network get sniffed by
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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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Global Security Law And Act Of Network Security
Introduction
Global Security Law / Act of Network Security
Global security also called International security. International security consists of the measures taken by nations and international organizations, such
as the United Nations, to ensure mutual survival and safety. These measures include military action and diplomatic agreements such as treaties and
conventions. International and national security is invariably linked. International security is national security or state security in the global arena.
(Wikipedia, 2014)
The Global Security Act also includes Global Network Security. Network security consists of products and services used to monitor, detect, and prevent
unauthorized access, misuse, malfunctioning, and destruction of a computer network. It helps to provide and maintain a secure platform to enable
users in the network to perform their critical tasks. Network security is increasingly gaining prominence especially because the number of hackers who
want to extort money or steal critical information has increased. Not only has the number of networks security threats increased, the level of
sophistication is much higher and traditional defense mechanisms are no match for these threats. Organizations, both large and small, have begun to
realize the importance of network security systems and have increased their investment in network security. In addition, there is now a growing
realization that network security systems can also increase workforce productivity,
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Essay on Network Security
Network Security
1. What is network security?
Network security has changed significantly over the past years. There is more and more data to monitor and analyze in order to detect the activity of
your data and systems. Securing a network has many variables. Password authentication, network access, patches, anti–virus protection, intrusion
detection, firewall and network monitoring tools are just a few of the things you can do to protect yourself.
Threats to your network is becoming more complex and it is requiring lots of money, time and sacrifices to keep up with the growing amount of
potential attacks. Companies cannot protect themselves with just a firewall anymore. Now it's requiring a full security department that ... Show more
content on Helpwriting.net ...
It's the same type of the thing, protecting your computer data from getting in the wrong hands. Who are these wrong hands? The familiar term is
hacker which Webster's dictionary describes as "3: an expert at programming and solving problems with a computer 4: a person who illegally gains
access to and sometimes tampers with information in a computer system". One of the main reasons for the high level of network security is because of
the bad part of the computer hacking world.
2. How to protect yourself? Protecting yourself is only effective if you know what you are protecting your against and how to protect. There are a
couple ways to start getting you more protected. The first is installing the default operating system. This would have a default password, no
security patches and no virus protection. The second thing you don't want to do is use simple and common passwords like for example,
password. In the 10 immutable laws below, one of the laws is someone is always trying to guess your password so make sure it's unique. A third
suggestion would be to keep as many ports that you don't need closed and a firewall can do this which is covered in the 3rd section on Security
Technologies. Finally, make sure you don't click on any email that you don't recognize or looks suspicions. Many viruses get spread by opening
emails or clicking on the link inside. This rule would help decrease the spread
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Local Network Security
There is a false sense of security experienced when someone is blissfully ignorant of certain details or lead to believe that they are indeed safe. For
something that is practically essential to human life in an industrial nation, this false sense of security is a hidden danger. With so many people
accessing a necessity and not realizing that this technology is insecure, there is an obvious problem. Unfortunately, a lot of people are nice and cozy
with their ignorance of the issue. These people rely on the internet for various activities on a daily basis. Most computer users have some basic sense of
safety while using the internet: they don't enter personal information online, abstain from clicking advertisements and refrain from... Show more content
on Helpwriting.net ...
The flag is raised when someone decides they want to know everything that is happening on the network – and they have no right to view that
information. This wouldn't be that big of a deal if ARP poisoning was a computing intensive process or too complex for the average user to understand.
Unfortunately, the only requirements to conduct this attack are basic computer knowledge, readily available software for network diagnostics and the
ability to follow directions. The attacker doesn't even have to know a programming language. Considering the power of ARP poisoning, it's dangerous
to have potentially unskilled and malicious people exploiting this network administration technique. Not only will most of the attackers have access to
private information about other users on a local area network, but most of them won't know what they are doing. It will create the euphoric feeling of
"hacking" a network, making them feel empowered. This can lead them to make irrational decisions, possibly leaking confidential information,
damaging a component or inadvertently causing a denial of service attack. A denial of service attack has the possibility to shut down an entire
network. The phrase "shut down an entire network" should be explored. The internet is powered and accessed by local area networks. Hence, local
area networks are essential to life. There is a huge dependence on them; everything from banking, research, and military
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Network Security Trends And Trends
1.1.5Network Security Trends
Network security has been instrumental in providing security to different types of networks. There are various types of networks like LAN, WAN
and MAN for which the security is provided in order to protect them from various unethical activities. The network security has also grown with the
recent advances in technologies. It is also very flexible in terms of providing security to advance and new platforms like cloud environment, virtual
environment, wireless environment.
There have been recent innovations in protecting the most important resources of the network. More advanced security technologies are employed on
the network in order to take advance precautionary measures to avoid various security threats. According to various situations companies adopt the
required security measure in order to address different types of unethical activities on the network. ... Show more content on Helpwriting.net ...
The network might be under threat if there are no proper security guidelines and procedures defined for a network. The use of proper security
applications also plays a major role in securing the critical infrastructure of the network.
For
... Get more on HelpWriting.net ...
Network Security : Information Security
CIS647–NETWORK SYSTEMS
COMPUTER NETWORK SECURITY
Prof : Philip Fitzpatrick
By:
Suresh Palleboina
(21063613)
COMPUTER NETWORK SECURITY
Introduction:
Computer network Security is the most essential and complex topic in IT field. It is important that all user must have an awareness about computer
network security. Internet is a biggest network in the world which connects all computer devices in the world. In our daily life millions of people
communication each other by using internet. So it is very difficult task to protect data which is transfer through internet. So many pioneers are try to
hack the information of well reputed organizations for their personal benefits.
What is Network security?
Network is an interconnection of many computer devices which is useful for flexible data transmissions and reception. Network security is the process
of take care bout information resources in a universal networking (Internet) environment.
Why we need Network security?
Information security is very important to every organization. If organizations fails to maintain proper networking security measures it got losses in all
aspects like software damages, Financial problems and etc.
Network Security Goals:
There are three main goals for maintaining secure networking.
1.Confidentiality
2.Integrity
3.Availability
Confidentiality is a phenomenon of operating functions in a computer is done by authorized persons only. Maintaining secrecy in the data
transformation and
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Best Practices For Network Security
Best Practices for Network Security Network security, in this technological age, should be one of the most important items of concern for any business
owner or network administrator. Since just about every company out there is connected to and conducts some sort of business over the Internet, just
about every one of them is at risk from outside threats. This means that they should take certain steps in order for them for them to conduct their
business securely. Beyond the initial steps, it must be known that there is no end to network security as it is a process that is continuous. The goal of
this paper is to discuss some "best practices" that companies should follow in order to provide adequate protection.
Recent examples In recent years, there have been a number of big name companies that have fallen victim to security breaches. In 2011, Sony's
PlayStation Network suffered a massive breach and as a result some 77 million user's accounts, containing names, addresses, e–mail addresses, birth
dates, usernames, passwords, and possibly credit card numbers, were compromised (Baker & Finkle, 2011). Another, more recent, breach took place
earlier this year. JP Morgan Chase had a similar breach this summer in which over 76 million retail clients and over 7 million business clients saw their
personal information compromised (Avoyan, 2014). While there was no evidence of account numbers or other financial data being compromised, the
mere fact that a bank this size could be
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Network Security Essay
Network Security
You can think of network security as an insurance policy in a dangerous new world. In the good old days of centralized processing, is all you had to
do was simply lock the computer room door and restrict entrance access. Those days are long gone in light of decentralized processing, the internet and
vast communi–cation networks. Personal data and transaction security through networks is of paramount concern when processing through the
expanding networks held by government and private enterprises. Network security in itself refers to a collection of tasks or plans that are implemented
to ensure data privacy. An overall plan is enacted with security profiles enacted on a multilevel structure allowing various... Show more content on
Helpwriting.net ...
Your medical records are another critical information area. From medical records, not only can wrongdoers get medical information about you but
really good tidbits like psychological problems you're encountered and maybe even your sexual orientation. Lesser types of juicy intrusions involve
trespassing into grocery store discount card purchases. While this may seem quite minor, it is not. Do you really want strangers to know all of the
huge purchases you've made of booze and cigarettes? Do you want people to know you're a boozing smokestack? What about your credit bureau?
Boy, if your credit bureau gets mixed up, that could keep you from getting a house. It could keep you from a lot of things. Your dreams could fade
away, all because of fraud. Quite clearly, network security in today's information age is of paramount concern.
THE MANY FACES OF ATTACKS
The first and easiest types of network attacks comes from hackers. Hackers are people typically using a home computer to gain access to systems
they shouldn't be in and indeed the access is usually illegal. Hackers more and more are hell–bent on obtaining proprietary information, be it on a
company or individual. If individ–ual personal information is obtained, that information can be used for a wide array of identity–theft crimes from
credit card fraud to bank account fraud. The list could be almost endless. On the other side, if company proprietary information is ob–tained, that
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Network Security : System Security
Network security : System security comprises of the procurements and approaches received by a system executive to avoid and screen unapproved
access, abuse, change, or dissent of a workstation system and system available assets. System security includes the approval of access to information in
a system, which is controlled by the system head. Clients pick or are appointed an ID and secret word or other verifying data that permits them get to
data and projects inside their power. System security blankets a mixture of machine systems, both open and private, that are utilized as a part of
ordinary employments directing transactions and interchanges among organizations, government orgs and people. Systems could be private, for
example, inside an organization, and others which may be interested in community. System security is included in associations, endeavors, and
different sorts of organizations. It does as its title clarifies: It secures the system, and additionally ensuring and managing operations being carried out.
The most well–known and straightforward method for securing a system asset is by relegating it a special name and a comparing watchword. The
reason for system security, essentially, is to ensure the system and its part parts from unapproved get to and abuse. Systems are powerless as a result
of their inborn normal for encouraging remote access. Case in point, if a programmer needed to get to a machine not on a system, physical access
would be crucial.
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Network Security And The Internet
As time goes by, network security has become substantially more important, whether it be for a business, the military, or even a private computer. With
the introduction of the internet, security became a major concern and it's only though a brief look recap on the history of security that we are allowed a
better understanding of the emergence of the new technology that is released for the private and public sector. As mentioned earlier, the creation of the
Internet allowed for a plethora of new threats. Despite the constant threats of malware and other annoyances, the architecture of the internet, when
modified can reduce the possible attacks that can be sent across the network. Knowing the attack methods, allows for the appropriate security to
emerge. Many businesses secure themselves from the internet by means of firewalls and encryption mechanisms. The businesses create an "intranet" to
remain connected to the internet but secured from possible threats. Several key events contributed to the birth and evolution of computer and network
security. Back during the first World War, the Allied army was having trouble deciphering secret German messages, while their own became heavily
compromised. However, Polish cryptographers created an enigma machine in 1918 that converted plain messages to encrypted text. In 1930, Alan
Turing, a mathematician, broke the code for the Enigma. Securing communications was essential in World War II. In the 1960s, the term "hacker" is
coined by a
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Network Security And Security
It is important for ABC Corporation to bring the network up to current security standards. Attempts to breach networks are becoming more
sophisticated and difficult to defend against, as more powerful hardware is introduced and new security defenses become available leaving older
measures unreliable. Aging networks that are improperly secured are more at risk than ever. It is not only important to ensure you have the proper
defense at the perimeter but also internally on wired and wireless infrastructure. When considering network security controls, acceptable risk is often
considered but needs to be minimized to provide the smallest attack surface for an attacker to exploit.
Large Corporate Data breaches are on the rise due to ... Show more content on Helpwriting.net ...
ABC Corporation has determined that a central authentication method that supports certificate exchange and integrates with an Active directory
environment best suits the company's needs. According to InfoSec, "By definition 802.1x is an IEEE standard for port based authentication which was
originally designed for wired network authentication and later leveraged to provide the same services to wireless. It is typically only implemented in
large networks such as campus or enterprise networks."
Implementing Radius as a security solution provides Ease of Management, Ease of Use, Support, Scalability and Security for the network and IT
staff. Radius will allow for the use of Certificate sharing between devices that can be pushed out through Active directory and Group Policy. These
policies and certificates can make the authentication process easier for the end user with automatic authentication or the ability to use the same
credentials that are used in other systems and can be controlled on a per user basis. These same group policies will allow you to assign users to
different networks based on roles within the company also known as Role Based Access Control (RBAC) further securing the network. (https:/
/www.securedgenetworks.com/blog/Why–802–1x–is–the–Best–Choice–for–Large–Scale–Wireless–Network) These studies by InfoSec also show that
eliminating older wireless authentications methods greatly reduces risk. In an article publish by ZDnet in
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Elements Of Network Security Essay
Elements of Network Security
Introduction
The primary objective of a network security system is to, in a cost effective manner, balance convenient access to legitimate users and inaccessibility to
attackers. In a nutshell, the goal is to prevent connectivity to anyone intending to cause harm to the network. The harm to which this paper refers can
come in the following forms:
1.Application–level security threats, such as e–mail viruses and attachments.
2.Threats to network infrastructure devices.
3.Theft of network connectivity services.
4.Unauthorized access from internal and external sources.
5.Denial of service attacks.
Using a proper network security strategy reduces and, in some cases, even avoids the listed harmful ... Show more content on Helpwriting.net ...
But these tools alone do not provide adequate system security В– a policy for system users, as mentioned above, that is based on the identification and
prioritization of threats and assumed threats helps to maintain the network's health. The key feature of the policy is an ongoing training program that
teaches all users the importance and value of including safe system user practices in their daily routine. Users are more likely to follow security
practices if they understand the purpose of the practice and the consequences when these practices aren't used. Added to the training is a physical and
electrical restriction of access to sensitive information and areas to users who have no business purpose for using such access. To ensure that the
preventive measures are functioning effectively, regular audits of the security policy are performed. Log–on IDs are checked to verify their validity,
and the users' activities are monitored to determine if the policies are being followed.
Detection
The next element of a network security system is system violation detection, or intrusion detection. This is an effort, should a system violator manage
to breach the security of the network, to catch the violation before any real damage can be done to the network. The most common approach to
intrusion detection is based on the belief that violations can be discovered by looking for abnormal system usage, or scanning the system in
... Get more on HelpWriting.net ...
Internal Network Security
Introduction
The development of technology has brought Internet to become the mass communication media between people or companies. Through Internet,
people can communicate with other people in various places. Companies can get many advantages by using Internet network to support their business.
Therefore, companies are trying as hard as they can, and give high effort in protecting their network from attack and make sure that they have the best
network security.
Most people think that the threat of security attack is only come from outside the company. In fact, the attack from inside the company network is more
harmful with high frequency to be happened. As written by Cryptek (2001), which based the argument from some articles, that... Show more content on
Helpwriting.net ...
If these vulnerabilities is not handle soon by the company, the information assets belong to the company can be easily steal from inside networks.
Developing Secure Internal Network
From all the attacks might threat corporate network either from outside or inside, company must think critically and fast to maintain the security of its
network by building the good network security design. It is not enough for a company to rely their network security to the firewall only, since we've
seen that the company network is also vulnerable with inside intrusion.
To build a good internal security system, company must be able to integrate system, by using good hardware tools that can guarantee the flexibility,
easiness to build and easy integration with other network. Company must also be able to build a good and strong internal security management, which
allow us to control the system centrally. With the central monitoring, we can reduce the costs of developing the systems. The last tools may work is to
integrate the security capabilities. As described by Cryptek (2001), the good management must be able to distributed user identification and
authentication, distributed firewall capabilities and VPN technologies.
There are some
... Get more on HelpWriting.net ...
The Practicality Of Network Security
Introduction: As a concept, the practicality of Network Security includes using activities designed to protect a user's network. Specifically, the core
aim for this security is to protect the usability, reliability, integrity, and safety of data on that network. In Network Securitythere are numerous
applications and software programs that are used by individuals which perform their own roles in securing network data. The most common and
possibly the most essential application used to protect network data is known as a firewall. A firewall is a program that is designed to act as a barrier
between an external network and the users. It is fundamentally designed to stop hackers, scammers, viruses, worms, and essentially any unauthorised...
Show more content on Helpwriting.net ...
Looking toward the future with the exponential evolution in technology, it is key to gather a more in depth and analytical study of the
methodologies involved in firewall systems.Observing the current direction of firewall development can provide an idea of the improvements that
can be made to keep up with an ever expanding technological society; especially as more and more people are being exposed, uneducated, to the
dangers of the internet. Aim: By taking a look at the average household or business building, it is realised that a common aspect of their basic
structure is the physical security mechanisms in place. These are in place to protect the privacy and integrity of what the owner possesses within. In
terms of a network, this concept of preventing unauthorised access of one 's property is just as valid. However, in the situation of a network, a
firewall is used as this prevention security system. The idea is simple; a user may have stored, on their network, a certain amount of private data that
is personal to them or their business. Thus, a firewall is put in place in order to prevent anything or anyone that does not have authorisation from
accessing any of this data. If an unknown and potentially dangerous individual were to try to get into a building complex, the physical security
appliances would react and prevent this from happening. A firewall works the same way; however it deals with potentially harmful packets entering the
network. These packets are
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Network Security And Its Effects On The Network
Abstract
In today's IT world, network security is starting to get more attention. In the past, companies' network infrastructures were capable of managing low
amounts of attacks on the network. This is not the case today. The number of online attacks is getting bigger and bigger. Today children from age 6
are capable of breaking into someone's network system. For attackers, it does not matter whether it is a large or small business or an individual computer
. If they find a glitch in the network, they will attack the system. Also, not too many people are conscious about how network security is important in
today's business. This paper will discuss network security, categorize type of hackers, and define types of attacks and security ... Show more content on
Helpwriting.net ...
2.Enforcement provides analytical form of all network traffic flows and aim to maintain the confidentiality(C), integrity (I), and availability (A), also
known as the CIA triad, of all systems and data on the network. In addition, the roles of the CIA triad are:
Confidentiality is set of rules that involve the protection of data from unauthorized entities.
Integrity has a role to make sure the modification of data is controlled in a specified and authorized manner.
Availability ensures that data are accessible whenever needed by the company (Palo Alto Networks, nd).
Even though the use of the CIA triad to describe security purposes is well recognized, some in the security area are considered to be necessary to
present a complete picture of additional concepts. The following two concepts are the most common (Stallings & Case, 2012):
Authenticity – The property is original and can be identified and trusted by the business. This means that users are checked and validated before each
input reaches the system which indicated that it came from a trusted source (Stallings & Case, 2012).
Accountability has the security goal to make sure that the activities of entity could be uniquely traced to that entity. Organizations must be capable to
trace a security breach to an accountable party (Stallings & Case, 2012).
3.Auditing is the network security process that requests checking back on applied measures to conclude how well they comply with the security
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Elements of Network Security
Elements of Network Security
Louis Kibby
Network / Datacom I TCM 537
Mr. Stuart Sandler
November 28, 2005
Elements of Network Security
Introduction
The primary objective of a network security system is to, in a cost effective manner, balance convenient access to legitimate users and inaccessibility to
attackers. In a nutshell, the goal is to prevent connectivity to anyone intending to cause harm to the network. The harm to which this paper refers can
come in the following forms:
1.Application–level security threats, such as e–mail viruses and attachments.
2.Threats to network infrastructure devices.
3.Theft of network connectivity services.
4.Unauthorized access from internal and external sources.
5.Denial of service attacks. ... Show more content on Helpwriting.net ...
28, 2001). Because this is an automated system, it depends on a mechanical process of discerning what is good or bad. This at times can lead to
false positives or negatives, or the blocking of a legitimate user and giving access to a system violator. This weakness in the Cisco IDS requires that an
additional form of violation detection be used.
In addition to the IDS, LADWP has a staff of technicians who provide continuous network monitoring. In addition to keeping track of the alarms
detected by the IDS' Director Platform, these technicians also use other tools to keep an eye on network traffic levels, as well as performing routine
vulnerability probing. One key tool used is Lucent's VitalSuite. This tool uses real–time event analysis, which helps to identify network resources that
have exceeded acceptable levels.
To properly use VitalSuite, the technicians establish what they believe to be normal network activity. This norm is then used as a baseline to help in
the identification of any abnormal network traffic. Once the baseline is established, levels of severity are set. The levels are minor, major and critical,
with critical meaning immediate action is required. The only time the system alarms is when a critical error is detected. During normal operations, the
technicians monitor VitalSuites' display, looking for unusual events. These events can
... Get more on HelpWriting.net ...
Security Threats Of Network Security
As the technology is growing the security threats are also increasing at higher rate. So, as to protect an organization from such network security threats
severe actions and several steps have to be taken by network security administrators. In any large organization that is having large number of big
servers, firewalls and interconnected network of hundreds of computers, security is one of the most important aspects so as to secure its network from
intruders. Within the organization, all the computers and devices are interconnected in a LAN network or using a WLAN (Wireless Local Area
Network). So, the most important task of network security administrator to secure its internal as well as external network from intruders because there
are... Show more content on Helpwriting.net ...
By sniffing a single wireless network, an intruder can access all the incoming and outgoing traffic over that wireless network resulting in heavy
loss of confidential data to an organization. If any intruder able to crack firewall and he will be able to access wireless network's internal network
and can read all the confidential data and also can inject malicious packets in the network so as to route the packets to some other destinations. There
is large number of tools available in the market through which a wireless network[1] can be cracked and sniffed such as: 802.11 wireless network
detector named Kismet, which is a wireless LAN detector named NetStumbler which uses 802.11b and WireShark for analyzing a network.
In order to secure a wireless network from intruders several measures has to be taken care while implementing wireless network within the
organization.Encryption algorithms are used to encrypt data over wireless network so that network cannot be easily read by the attackers. There are
several authentication techniques that can be implemented to secure data over wireless networks such as: biometric technique, OTP method and
Single Sign on techniques are used. Attackers use several methods to crack wireless passwords like brute forcing, so as to secure passwords strong
passwords with special characters and keys has to be used making it difficult to crack.Wi–Fi Protected Access (WPA) or Wired Equivalent Privacy[4]
(WEP) encryption is used by most of the
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Network Server Security
Network Server Security
The network server at focus in this study is one utilized primarily for data storage and internal application sharing as well as for securing numerous
desktop computers connected to the network. This work will describe access control that would be put in place for each of these with explanations
on why these would be used. A message of at least 20 characters will be generated using a Vigener cipher keys that is at least three letters long, The
message will be encrypted along with an explanation of how secure this message is and why. The form ofsecurity chose for the network will be
identified with physical and electronic security considered. Included will be virus checks, firewalls, and encryption protocols as well as any access
protocols explaining how each secures the network. This work will additionally list three specific project goals which if met would reduce or alleviate
any problems or deficiencies.
I. Database Access for Data Storage and Internal Application Sharing and Desktop Computers
Security controls for the network system involves the creation of access and use for each user or user group. The control is used to "restrict a list of
possible actions down to the allowed actions. For example, encryption can be used to restrict access to data, application controls to restrict processing
via authentication, and DRM storage to prevent unauthorized accesses." (Securosis, 2012) The necessary controls are determined by "first listing out
... Get more on HelpWriting.net ...

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Network Security Applications

  • 1. Network Security Applications Network Security Applications and Countermeasures |Domains |CIA Functions | | |Ethical Hacker |User domain |Confidentiality | |Intrusion Detection system / intrusion |WAN Domain |Integrity | |prevention system | | | |Access controls |User Domain |Confidentiality | |Failover server |Systems / Applications Domain |Availability... Show more content on Helpwriting.net ... Firewalls are set up on computers to help protect computers and other devices from attacks from potentially harmful websites and other resources. Proxies are servers that act as a middle man for computers. They allow users to make indirect connections to other servers. The LAN–to–WAN domain is where the infrastructure connects to the Internet. Updates, firewalls and proxies will help to keep things running and help to keep it protected. The fifth domain is the WAN domain. In this domain, the network security application that is apart of it is the intrusion detection system/intrusion prevention system (IDS/IPS). This device monitors the system for malicious activities and reports it back (Kim & Solomon, 2012). The WAN Domain connects to remote locations and using the IDS/IPS is crucial because it will help to remote if any outside activity is trying to access the system that should not be. The sixth domain is the Remote Access Domain. In this domain, the network security applications that is apart of it is Proxies. Similar to LAN–to–WAN domain, proxies help to allow users to connect to server through another server. Remote access allows users to connect to the server remotely and Proxies give a user the opportunity to use a proxy server to do this. The seventh domain is the Systems/Applications Domain. In this domain, the network security ... Get more on HelpWriting.net ...
  • 2. The Problem Of Computer Network Security Introduction Computer network security has never been as critical as it is today. The news is littered with the widespread incidents of hacking and cyber theft in the financial, entertainment, and retail industries, and more recently in our military. A recent survey, conducted by Kaspersky Lab, a leader in endpoint protection solutions, found that 94% of all companies surveyed experienced a cyber security issue (Kaspersky Lab, 2014). Furthermore, a recent study has found that the average cost of a data breach to a company was $3.5 million, a 15% increase from the previous year (Ponemon Institute, 2014). In this day and age, the cost of a data breach, not only to a company's bottom line, but to their reputation, would be extensive. Statement of the Problem Recently, Acme Corporation experienced a network compromise which resulted in the possible compromise of the personally identifiable information (PII) of their employees and clients. As a start–up company, many technological issues were overlooked in the interest of getting the business off the ground. Significant emphasis was placed on acquiring the most up–to–date and cutting edge hardware and software, unfortunately, only mediocre consideration was placed on network security. This report will examine the factors that contributed to vulnerability and will identify the solutions that must be undertaken to secure the company network and protect it against future cyber–attacks. Computer Network Security Analysis Forensic ... Get more on HelpWriting.net ...
  • 3. The Threat Of Network Security There are threats to network security that can compromise your computer systems. Viruses are one of the top security threats in the technology industry. A virus is a program or a code that is loaded into your computer system without your knowledge will run against your wishes (Beal, n.d). Viruses can also replicate themselves. All computer viruses are manmade and a virus can make a copy of itself several times and easy to create (Beal, n.d). Mark Vernon wrote that 72% of all companies have received infected e–mails or files last year and for larger companies the percentage was 83% (Vernon, 2004). The top viruses in malignancy are Worms and Trojan Horses (Vernon, 2004). Another threat to network security is malware. Malware (malicious software) is a annoying or harmful type of software that is intended to secretly access a device without a user's knowledge. There are different types of malware, which include spyware, phishing, viruses, adware, Trojan horses, worms, ransomware, rootkits, and browser hijackers ("What is Malware and how to remove it | Cyber security," n.d.). Malware gets access to your device through the internet, email, hacked websites, toolbars, music files, free subscriptions, toolbars and anything downloaded from the web ("What is Malware and how to remove it | Cyber security," n.d.). Spam is also another threat to network security. Spam is a unsolicited message that advertises a service or product. Spammers target email accounts but can also be found on ... Get more on HelpWriting.net ...
  • 4. The Security Of Network Security And Web Security The network security professionals across the globe have provided details about the attacks so that the security software can be improved, however there are some shortcuts that can improve the security for the time being or if the web host has a difficulty in procuring modern security software, these techniques can help the web host to increase the security of both the web server and clients that are connected to the web server. The CRIME and BREACH attack both target compression that is either HTTPS or HTTP level, these attacks also work against a number of other compressions and connections but since HTTPS and HTTP are the most used compression levels, the security should be bolstered to protect them. The compression can simply be ... Show more content on Helpwriting.net ... The security can also be bolstered by hiring alleged attackers that can point out the weaknesses that are exploited and then these weaknesses can be strengthened by the security professionals. There are also various techniques that can stop the attacker to access the LAN router so that there is not attack initiated from the Wi–Fi of a client computer. The LAN router in public places are not extensively secure and the attackers either use these networks to initiate attack on others so that they cannot be traced or they can simply attack the users on this network to leak information that is important. The protection of HTTPS connection should also be upgraded or security add–ons should be created to protect the integrity of the browser so that the client cannot be affected by the malicious JavaScript that is sent by the attacker. There are browsers like Chrome and Mozilla which are not affected from the attack as they have extensively worked together to ensure that security is not penetrated or bypassed by the attacker. The other companies should also work in cooperation with each other to ensure that their security is paramount and that attackers are minimised. The JavaScript sends requests to a web server that is created by the attacker to capture the information from the client so the client also needs to employ security ... Get more on HelpWriting.net ...
  • 5. The Components Of Lifecycle Of Network Security The present era can be referred as a digital era as well, which has created various opportunities for organizations to conduct business and deliver different services over the internet. The cyber security is basically a practice that helps organizations minimize risks, helps the security operations in an effective manner, provide authentication and access control for resources, guarantee availability of resources and also helps to achieve regularity for enhancing own business network. The basic components of the security include; confidentiality (maintaining privacy of the data), integrity (detecting the data is not tampered), authentication (establishing proof of identity, non–repudiation (ability to prove that the sender actually sent the data), availability (computer assets are available to authorized parties when needed), and access control (access to information resources are regulated). The problems of network security include: increase in network attacks increased sophistication of attacks lack of awareness lack of security policies lack of proper laws. The components of lifecycle of network security are plan, design, implement, operate, and optimize. Information / Internet threats: Internet threats are malicious software programs designed to target users when they are online. Threat is a potential occurrence that might compromise the assets. An asset is a resource of value. The threat is linked to vulnerability (vulnerability is a weakness in the ... Get more on HelpWriting.net ...
  • 6. The Problem Of Network Security Network security has never been so critical for the last decades. Companies nowadays are at a potential risks. The use of data is essential for business needs and user's education is a priority. Users allow companies to manipulate their data on a trust relationship basis. A startup healthcare company has many challenges in the market as new cyber threats come every seconds which impel network security administrator to enforce strict rules and measures. A company information technology structure set up will determine its protection. A risk analysis is important to discover flaws and recommend measures that administrators need to take. As for any startup company, the needs to a good information technology structure plan is paramount. ABC Healthcare is new with 50 employees. According to fig.1 which illustrates the ABC information technology structure the company is at great risk. The company is equipped with an ISP modem/router that is directly connected to a switch. The ABC might have installed great antivirus software to protect their system against cyber–attacks. Nevertheless, managing healthcare data in a network with only antivirus is not enough. An antivirus offers great protection and is an effective way to protect against viruses. However, a firewall is a necessary tool to help keep attackers off the network based on rules set implicitly to filter the web traffic and protect files. While antivirus is a great tool to help keep you safe, adding a firewall will give the ... Get more on HelpWriting.net ...
  • 7. Manage Network Security How Managed IT Service Providers Enhance Network Security As technology and the Internet continue to exponentially grow, unscrupulous individuals continue to create new security risks for organizational privacy, confidentiality and data integrity. Because almost all network–based services and applications pose some level of security risk, personal and business information must protected through enhanced security systems and controls. Managed IT service providers often offer the highest levels of security that protect assets, maintain integrity, ensure availability and ensure confidentiality. The Urgent Need for Enhanced Security The Federal bureau of Investigation (FBI) states that billions of dollars are wasted every day because of various ... Show more content on Helpwriting.net ... Budgeting for technology is difficult when IT equipment may sudden experience problems, but managed IT service provides take care of all maintenance, so organizations can better budget for service costs and prepare for upgrades. Many managed IT service providers incorporate repair and service work into the contracts. Most managed IT service organizations use web– and cloud–based technology, so there is plenty of data to be tracked trended. Comprehensive IT reporting helps management allocate budgets, monitor staff, understand trends and review problem remediation. Online client dashboards often provide access to helpful tools and customizable reports. Organizations can still maintain dedicated IT person, but they will be freed from dealing with daily troubleshooting and maintenance. ... Get more on HelpWriting.net ...
  • 8. Network Security And The Security Hospital Network Security With a multitude of changes occurring in the technology field, it is critical that hospitals maintain the highest levels of security for their internal network as well as their public access network. Hospitals contain vital information about patients, treatment styles, employees and staff, as well as pharmaceuticals that are kept on the premises. The importance of protecting this information cannot be understated and a breach in security could cause a breakdown in all areas of the network, having a catastrophic effect on the entire hospital. One of the most important aspects of network security is a strong network security model. The network security model consists of seven layers that work together to provide the strongest possible security for the network. The seven layers are the physical layer, the vlan layer, the software layer, the user layer, the administrative layer, and the IT department layer. A network security model that is well thought out and designed allows the network security team to analyze and maintain the network and determine if there has been a breach and the location of the breach. The first layer of the network security model, the physical layer, pertains to physical security. This entails the prevention of a physical attack on servers and other devices connected to the network. The physical layer is one of the most important layers of protection because if it is breached, the layers beneath it will ... Get more on HelpWriting.net ...
  • 9. 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
  • 10. 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 ...
  • 11. Information Security And Network Security In information security, computer security and network security an Asset is any data, device, or other component of the environment that supports information–related activities. Assets generally include hardware (servers and switches), software (e.g. mission critical applications and support systems) and confidential information. Assets should be protected from illicit access, use, disclosure, alteration, destruction, and/or theft, resulting in loss to the organization. Security assets are quite helpful for large or small companies and have many different ways of protecting one's information. It is quite common to find many individuals involved in compromising a company's intellectual property. Suspects would most likely be a current /former employee, trusted customers, or competitors. Therefore security assets are major in protecting and securing a company's information. The first step to securing intellectual Property is management structure. This will guarantee that your Intellectual Property will run with a few protection measures implemented. The second step is Operational Security. This will enable a background check on vendors and third parties. Also, this will go over existing hiring and departure policies for employees. The third and final step to securing intellectual property is Cyber security. This will put a stop to network intrusion, safeguard mobile device security, and remote access security. Protecting a company's intellectual property is very important. ... Get more on HelpWriting.net ...
  • 12. Computer And Network Security Incidents Purpose Computer and network security incidents have become a fact of life for most organizations that provide networked information technology resources including connectivity with the global Internet. Current methods of dealing with such incidents are at best piecemeal relying on luck, varying working practices, good will and unofficial support from a few individuals normally engaged in central network or systems support. This approach undoubtedly leads to inefficiencies and associated problems with respect to: * Duplicated effort * Inappropriate actions * Poor co–ordination * Confusion – No obvious authority, identifiable responsibilities or overall management * Tardy incident detections... Show more content on Helpwriting.net ... It is recommended that the new permanent staff posts be assigned to the Computing Service department and based within one of the existing central support teams. Additional central support team resources would be drawn from the following: * Network team – at least 2 members * Central team – at least 2 members Responsibilities The primary responsibilities of the Core team would be to maintain the day to day operation; provide advice, monitor for incident alerts and reports, manage incident investigations and provide follow up analysis and reports to Corporation Techs management committee; in detail the Core team would be responsible for the following support activities: * Provide availability for contact and incident response * Produce an incident classification scheme based on risk assessments for Information Technology resources * Work with Computing Service central support teams to introduce proactive measures for incident avoidance or early incident detection * Monitor external and internal sources for alerts and incident reports * Notify and consult with campus IT support staff, network and systems administrators * Perform ... Get more on HelpWriting.net ...
  • 13. Network Security : A Secure Platform For Computers Networking security the process of taking physical and software preemptive evaluations to protect the underlying network foundation from unauthorized admittance, misuse, glitch, modification, demolish, imprudent revelation, thereby creating a secure platform for computers, users and programs to implement their permitted critical functions within a secure environment. Network security has become significant due to the patent that can be obtained through the Internet. There are essentially two different networks, data networks and synchronous network composed of switches. The Internet is considered to be a data network. Since the prevailing data network resides in computer based routers, information can be accessed by special programs, such ... Show more content on Helpwriting.net ... Confidentiality prevents the access of the unauthorized system and person to the sensitive information of an organization. Due to the increasing contentious and competitive business environment, confidentiality is very important for an organization. The failure in protection of confidentiality of a business can cause serious issues if the confidential information gets into the wrong hands, they can use this information for illegal activities such as scam, fraud and stealing money which can result in loss of productivity. Integrity is information that cannot be changed slightly and has to be reliable. Although millions of dollars have been invested in this sector, but still the information in the warehouses is inaccurate and sometimes incompatible with its origin. As the result the data warehouse faces failure, low acceptance and confidence of the clients and users. Incorrect and incomplete information decrease the operational ability; become the cause of incorrect business decisions. Availability means, the required data and information must be available and accessible to the authorized personals at anytime and anywhere. For example, the information is in the server, but the server is overloaded and not working properly or the server crash and no one able to access the information needed. It is important to understand that the information unavailable not only in case when it is destroyed or lost, but also ... Get more on HelpWriting.net ...
  • 14. Network Security Practices Essay Today's corporate infrastructure is not the same as it was 10 years ago. In the past you were able to control the amount of attacks on a network because of the reasonable number, which is not the case today. At any given time an organizations network will be attacked or try to be attacked several hundred times in one day. For larger more well–known organizations this number could grow significantly. To ensure your organization is not one of the ones on the 10'oclock news you have to ensure you have proper security practices in place to secure your network. Most people in the security field agree that good security policies are necessary to keep intruders out and keep the users along with the information on their network safe. The best way ... Show more content on Helpwriting.net ... Having this type of accountability will help you in having a better understanding and provide for a good foundation for enforcing security across the organization. This area should also cover the different types of data each person handles on a daily basis. It should clearly outline the different categories that data will fall into whether it be internal, external, general use or confidential. By doing so you now allow the employees to have a better understanding of what data they can manipulate and data that has to stay the same. 2. Remote Access Policies – users are always going to want to access the office network from a remote site. We have to ensure that there are policies in place that allow them to do so but in a safe manner. If they are going to remotely access the network it has to be done in accordance with the security policies of the organization and not on their terms. This should include using a laptop or remote connection software that has been pre–approved by the organizations security team, keeping IP's in a safe place, making sure that if they are accessing the network from a laptop to ensure that hard drive is encrypted. This will prevent anyone from gaining access the sensitive information if it is ever lost or stolen. Lastly not everyone should be granted remote access to the network; this privilege should only be given to people who have a legitimate need for it. 3. Network Connected Devices – Once a device is connected to the ... Get more on HelpWriting.net ...
  • 15. Network Security And The Network Abstract Network security is a broad term used to refer to processes and procedures that are configured by a company's network administrator to provide visibility and prevent denial of service, unauthorized access, modification and exploitation of the corporate network or respective resources. The resources refer to files or computer programs available on the corporate network infrastructure. The infrastructure comprise of corporate software and hardware resources that facilitate communication, connectivity, management and operations within the corporate network. (Vacca, 2014) This infrastructure thus provides a communication path between applications, users, services, processes and external networks like the internet. Typically, a... Show more content on Helpwriting.net ... The network security manager can equally use intrusion detection systems and anti–virus software to prevent unauthorized access and blocking harmful viruses and malware from entering a network respectively. This paper however, does not focus on these approaches but primarily focuses on how firewalls enhance network security. A firewall is a security technology designed to avoid unauthorized access to or from a private network. Firewalls can be placed in both hardware and software, or can also be placed in both hardware and software. Firewalls are usually used to prevent unauthorized access on a network. All messages entering or leaving the network go through a firewall, the firewall analyses all the messages and then blocks the messages that do not meet the security standards. The administrator sets the security standards which packets need to meet, he/she will decide which packet is suitable to pass through the firewall. (Webopedia.com, 2017), (Services, 2017). Once an administrator has set up a policy, it then needs to be tested to determine if the firewall has been correctly implemented. Introduction Network security has become a major concern in the computing industry, including organizations, personal users and the military. The reason for this is due to the large number of security threats that occur on a daily basis. The internet architecture itself allows many threats to ... Get more on HelpWriting.net ...
  • 16. Wireless Network Security Reis Barrie Research Paper CNT4514 Wireless Vulnerabilities The world of wireless networks as we all know is one of the most rapidly growing areas in our world today. With the massive amount of data that is going on, "the cloud" the security of all of our data is questioned. As well with so many of our day to day tasks relying on our wireless capabilities it make you wonder how safe is it to rely so heavily on something. We have to ask the questions what are the key vulnerabilities of wireless networks and even just of networks in general. Different types of networks have different levels of safety and it is a good idea to know not only which are safe but the vulnerabilities of said networks to keep our information out of the ... Show more content on Helpwriting.net ... As well as PlayStation we the same group hit another gaming community named Blizzard and launched many DDoS attacks taking down their online gaming servers for hours at a time over the period of a few days. The group that took responsibility was called LizardSquad, they have also been known to target a website called KrebsonSecurity[dot]com. On KrebsonSecurty they have proof of people from the LizardSquad organization trying to find new "hackers" which is a debatable term for someone that DDoS's considering DDoS'ing requires virtually no skill, and asking for them applicants to take down one of two sites. If they could accomplish this task then they could join the LizardSquad group of "hackers" or as KrebsonSecurity calls them, "a gaggle of young misfits that has long tried to silence this web site." Another example of DDoS is a more drastic when the hacktivist anonymous used DDoS attacks in 2006 and 2007 to cost Hal Turner and his radio show that some considered to be politically incorrect thousands of dollars in bandwidth bills that his radio show eventually went under. Hal Turner eventually attempted to sue the hacking group but the suit was soon dropped by the courts. Another growing section of wireless technologies is Bluetooth. Every day a new Bluetooth device is released, these devices are security nightmares for the most part. Bluetooth has been proves to have ... Get more on HelpWriting.net ...
  • 17. Network Security Essay Network Security Network security is a problem that network administrators face. It is something that network administrators should keep a careful eye on. For example, if the home network does not have any security measures in place, then the person is at a high risk of data loss due to hacking. Network security is something that businesses do not take very lightly because they want to protect their valuable information and network resources from hackers. It is a problem because of unauthorized use and can be resolved by increasing the security encryption levels. Networks, including the internet, are one of the most essential things to businesses. Without computer networks, companies would be lost and would not have a way to... Show more content on Helpwriting.net ... Expenses make it difficult to totally replace old systems with new ones. Beyond the purely financial costs involved, doing so often requires retraining thousands of employees and making changes to long–established systems and processes. The bad thing about many legacy systems these days is that they were not made to function reliably with different systems or to be accessed by means of an internet connection. For example, while almost all the enterprise wireless local area network chipsets are using Atheros Xspan chip sets then their access points, their power claims may vary wildly." ("10 Problems" 36) Companies are relying on their networks for more tasks than ever before. At many places, wireless access points, voice–over–internet–protocol phones and security cameras are allowing many businesses options, along with the opportunity to run phone and even electric lines. (10 Problems 36) Network security is a problem for many reasons. Government intrusions are one of the many network security problems, hackers are also one of the causes of network security problems in the U.S as well as low encryption. "Every time you send an e–mail or a text message, search Google, or read a Web page, there is a good chance that National Security Agency (NSA) computers are tracking you, all as part of the government's 'war on terror' (Perry 1). Anything that is said or ... Get more on HelpWriting.net ...
  • 18. 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 ...
  • 19. Network Security : A Security Platform For Users,... NETWORK SECURITY VIPUL KUMAR KOTHIFODA ILLINOIS INSTITUTE OF TECHNOLOGY A20357836, vkothifo@hawk.iit.edu ABSTRACT In today's world Network Security plays a vital role to protect the underlying network infrastructure from unauthorized access, malfunction, modification and improper disclosure. Network security helps to create a security platform for users, programs, and computers. Security became a major concern with the explosion of the public internet and e–commerce, private computers and computer networks. This white paper outlines the overview of network security threats and its solution which protects you and your organization from threats and malware and confirms that data travelling across your network is safe. Keywords: [Click ... Show more content on Helpwriting.net ... Network Security involves authorization of access to data in a network because each and every client who is working on the internet wants security and sometimes he or she do not know that someone else may be an intruder collecting the information. The vast topic of network security is scrutinized by researching the following. 1.History of network security 2.Attacks and Prevention Method. 3.Role of Network Protocol 4.Pros and Cons HISTORY OF NETWORK SECURITY Securing information over had started in the late 1960s when network only occurred in the sense of huge mainframes and several networked terminal. Network security has advanced day by day due to increasing faith on public networks not to reveal personal as well as professional information. The first crime was committed by Kevin Mitnick. This was the largest computer–related crime in U.S. history. In this crime people losses eighty million dollars from different companies. In the 1970s the birth of internet takes place in 1969 by Advanced Research Projects Agency Network (ARPANet) is commissioned by Department of Defense (DOD) for research in networking. In the very beginning, ARPANET succeed. The Inter Networking Working Group (INWG) becomes the first of multiple
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  • 21. Essay on Network Security Network Security In the last decade, the number of computers in use has exploded. For quite some time now, computers have been a crucial element in how we entertain and educate ourselves, and most importantly, how we do business. It seems obvious in retrospect that a natural result of the explosive growth in computer use would be an even more explosive (although delayed) growth in the desire and need for computers to talk with each other. For quite some time, businesses were primarily interested in sharing data within an office or campus environment, this led to the development of various protocols suited specifically to this task. Within the last five years, businesses have begun to need to share data across wide areas. This has ... Show more content on Helpwriting.net ... Unfortunately, none of the current solutions scale particularly well. Two general approaches dominate this area: 1. Virtual Private Networks: When a virtual private network is implemented, the lowest levels of the TCP/IP protocol are implemented using an existing TCP/IP connection. There are a number of ways to accomplish this which tradeoff between abstraction and efficiency. The advantage this gives you in terms of secure data transfer is only a single step further away. Because a VPN gives you complete control over the physical layer, it is entirely within the network designer's power to encrypt the connection at the physical (virtual) layer. By doing this, all traffic of any sort over the VPN will be encrypted, whether it be at the application layer (such as Mail or News) or at the lowest layers of the stack (IP, ICMP). The primary advantages of VPNs are: they allow private address space (you can have more machines on a network), and they allow the packet encryption/translation overhead to be done on dedicated systems, decreasing the load placed on production machines. 2. Packet Level Encryption: Another approach is to encrypt traffic at a higher layer in the TCP/IP stack. Several methods exist for the secure authentication and encryption of telnet and rlogin sessions (Kerberos, S/Key and DESlogin), which are examples of encryption at the highest level of the stack (the application layer). The advantages to encrypting ... Get more on HelpWriting.net ...
  • 22. Security Threats Of Network Security As the technology is growing the security threats are also increasing at higher rate. So, as to protect an organization from such network security threats severe actions and several steps have to be taken by network security administrators. In any large organization that is having large number of big servers, firewalls and interconnected network of hundreds of computers, security is one of the most important aspects so as to secure its network from intruders. Within the organization, all the computers and devices are interconnected in a LAN network or using a WLAN (Wireless Local Area Network). So, the most important task of network security administrator to secure its internal as well as external network from intruders because there are several ways intruders can sniff the network and resulting in heavy loss of data. There are several threats that can affect network security of an organization such as: Wireless Sniffing, DoS (Denial of Service), sniffing of VoIP network, trojans and unauthorized access to FTP server. Wireless Sniffing and potential measures to secure wireless Networks In today's business scenario, within the organization most of the operations taken place over a wireless network such as transferring data between systems using wireless, accessing internet and sending Mails over Internet. Large number of rooters is used for providing internet access and wireless access to computers. Consider a situation, in which if one of the network get sniffed by ... Get more on HelpWriting.net ...
  • 23. 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.
  • 24. 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 ...
  • 25. Global Security Law And Act Of Network Security Introduction Global Security Law / Act of Network Security Global security also called International security. International security consists of the measures taken by nations and international organizations, such as the United Nations, to ensure mutual survival and safety. These measures include military action and diplomatic agreements such as treaties and conventions. International and national security is invariably linked. International security is national security or state security in the global arena. (Wikipedia, 2014) The Global Security Act also includes Global Network Security. Network security consists of products and services used to monitor, detect, and prevent unauthorized access, misuse, malfunctioning, and destruction of a computer network. It helps to provide and maintain a secure platform to enable users in the network to perform their critical tasks. Network security is increasingly gaining prominence especially because the number of hackers who want to extort money or steal critical information has increased. Not only has the number of networks security threats increased, the level of sophistication is much higher and traditional defense mechanisms are no match for these threats. Organizations, both large and small, have begun to realize the importance of network security systems and have increased their investment in network security. In addition, there is now a growing realization that network security systems can also increase workforce productivity, ... Get more on HelpWriting.net ...
  • 26. Essay on Network Security Network Security 1. What is network security? Network security has changed significantly over the past years. There is more and more data to monitor and analyze in order to detect the activity of your data and systems. Securing a network has many variables. Password authentication, network access, patches, anti–virus protection, intrusion detection, firewall and network monitoring tools are just a few of the things you can do to protect yourself. Threats to your network is becoming more complex and it is requiring lots of money, time and sacrifices to keep up with the growing amount of potential attacks. Companies cannot protect themselves with just a firewall anymore. Now it's requiring a full security department that ... Show more content on Helpwriting.net ... It's the same type of the thing, protecting your computer data from getting in the wrong hands. Who are these wrong hands? The familiar term is hacker which Webster's dictionary describes as "3: an expert at programming and solving problems with a computer 4: a person who illegally gains access to and sometimes tampers with information in a computer system". One of the main reasons for the high level of network security is because of the bad part of the computer hacking world. 2. How to protect yourself? Protecting yourself is only effective if you know what you are protecting your against and how to protect. There are a couple ways to start getting you more protected. The first is installing the default operating system. This would have a default password, no security patches and no virus protection. The second thing you don't want to do is use simple and common passwords like for example, password. In the 10 immutable laws below, one of the laws is someone is always trying to guess your password so make sure it's unique. A third suggestion would be to keep as many ports that you don't need closed and a firewall can do this which is covered in the 3rd section on Security Technologies. Finally, make sure you don't click on any email that you don't recognize or looks suspicions. Many viruses get spread by opening emails or clicking on the link inside. This rule would help decrease the spread ... Get more on HelpWriting.net ...
  • 27. Local Network Security There is a false sense of security experienced when someone is blissfully ignorant of certain details or lead to believe that they are indeed safe. For something that is practically essential to human life in an industrial nation, this false sense of security is a hidden danger. With so many people accessing a necessity and not realizing that this technology is insecure, there is an obvious problem. Unfortunately, a lot of people are nice and cozy with their ignorance of the issue. These people rely on the internet for various activities on a daily basis. Most computer users have some basic sense of safety while using the internet: they don't enter personal information online, abstain from clicking advertisements and refrain from... Show more content on Helpwriting.net ... The flag is raised when someone decides they want to know everything that is happening on the network – and they have no right to view that information. This wouldn't be that big of a deal if ARP poisoning was a computing intensive process or too complex for the average user to understand. Unfortunately, the only requirements to conduct this attack are basic computer knowledge, readily available software for network diagnostics and the ability to follow directions. The attacker doesn't even have to know a programming language. Considering the power of ARP poisoning, it's dangerous to have potentially unskilled and malicious people exploiting this network administration technique. Not only will most of the attackers have access to private information about other users on a local area network, but most of them won't know what they are doing. It will create the euphoric feeling of "hacking" a network, making them feel empowered. This can lead them to make irrational decisions, possibly leaking confidential information, damaging a component or inadvertently causing a denial of service attack. A denial of service attack has the possibility to shut down an entire network. The phrase "shut down an entire network" should be explored. The internet is powered and accessed by local area networks. Hence, local area networks are essential to life. There is a huge dependence on them; everything from banking, research, and military ... Get more on HelpWriting.net ...
  • 28. Network Security Trends And Trends 1.1.5Network Security Trends Network security has been instrumental in providing security to different types of networks. There are various types of networks like LAN, WAN and MAN for which the security is provided in order to protect them from various unethical activities. The network security has also grown with the recent advances in technologies. It is also very flexible in terms of providing security to advance and new platforms like cloud environment, virtual environment, wireless environment. There have been recent innovations in protecting the most important resources of the network. More advanced security technologies are employed on the network in order to take advance precautionary measures to avoid various security threats. According to various situations companies adopt the required security measure in order to address different types of unethical activities on the network. ... Show more content on Helpwriting.net ... The network might be under threat if there are no proper security guidelines and procedures defined for a network. The use of proper security applications also plays a major role in securing the critical infrastructure of the network. For ... Get more on HelpWriting.net ...
  • 29. Network Security : Information Security CIS647–NETWORK SYSTEMS COMPUTER NETWORK SECURITY Prof : Philip Fitzpatrick By: Suresh Palleboina (21063613) COMPUTER NETWORK SECURITY Introduction: Computer network Security is the most essential and complex topic in IT field. It is important that all user must have an awareness about computer network security. Internet is a biggest network in the world which connects all computer devices in the world. In our daily life millions of people communication each other by using internet. So it is very difficult task to protect data which is transfer through internet. So many pioneers are try to hack the information of well reputed organizations for their personal benefits. What is Network security? Network is an interconnection of many computer devices which is useful for flexible data transmissions and reception. Network security is the process of take care bout information resources in a universal networking (Internet) environment. Why we need Network security? Information security is very important to every organization. If organizations fails to maintain proper networking security measures it got losses in all aspects like software damages, Financial problems and etc. Network Security Goals: There are three main goals for maintaining secure networking. 1.Confidentiality 2.Integrity 3.Availability Confidentiality is a phenomenon of operating functions in a computer is done by authorized persons only. Maintaining secrecy in the data transformation and
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  • 31. Best Practices For Network Security Best Practices for Network Security Network security, in this technological age, should be one of the most important items of concern for any business owner or network administrator. Since just about every company out there is connected to and conducts some sort of business over the Internet, just about every one of them is at risk from outside threats. This means that they should take certain steps in order for them for them to conduct their business securely. Beyond the initial steps, it must be known that there is no end to network security as it is a process that is continuous. The goal of this paper is to discuss some "best practices" that companies should follow in order to provide adequate protection. Recent examples In recent years, there have been a number of big name companies that have fallen victim to security breaches. In 2011, Sony's PlayStation Network suffered a massive breach and as a result some 77 million user's accounts, containing names, addresses, e–mail addresses, birth dates, usernames, passwords, and possibly credit card numbers, were compromised (Baker & Finkle, 2011). Another, more recent, breach took place earlier this year. JP Morgan Chase had a similar breach this summer in which over 76 million retail clients and over 7 million business clients saw their personal information compromised (Avoyan, 2014). While there was no evidence of account numbers or other financial data being compromised, the mere fact that a bank this size could be ... Get more on HelpWriting.net ...
  • 32. Network Security Essay Network Security You can think of network security as an insurance policy in a dangerous new world. In the good old days of centralized processing, is all you had to do was simply lock the computer room door and restrict entrance access. Those days are long gone in light of decentralized processing, the internet and vast communi–cation networks. Personal data and transaction security through networks is of paramount concern when processing through the expanding networks held by government and private enterprises. Network security in itself refers to a collection of tasks or plans that are implemented to ensure data privacy. An overall plan is enacted with security profiles enacted on a multilevel structure allowing various... Show more content on Helpwriting.net ... Your medical records are another critical information area. From medical records, not only can wrongdoers get medical information about you but really good tidbits like psychological problems you're encountered and maybe even your sexual orientation. Lesser types of juicy intrusions involve trespassing into grocery store discount card purchases. While this may seem quite minor, it is not. Do you really want strangers to know all of the huge purchases you've made of booze and cigarettes? Do you want people to know you're a boozing smokestack? What about your credit bureau? Boy, if your credit bureau gets mixed up, that could keep you from getting a house. It could keep you from a lot of things. Your dreams could fade away, all because of fraud. Quite clearly, network security in today's information age is of paramount concern. THE MANY FACES OF ATTACKS The first and easiest types of network attacks comes from hackers. Hackers are people typically using a home computer to gain access to systems they shouldn't be in and indeed the access is usually illegal. Hackers more and more are hell–bent on obtaining proprietary information, be it on a company or individual. If individ–ual personal information is obtained, that information can be used for a wide array of identity–theft crimes from credit card fraud to bank account fraud. The list could be almost endless. On the other side, if company proprietary information is ob–tained, that ... Get more on HelpWriting.net ...
  • 33. Network Security : System Security Network security : System security comprises of the procurements and approaches received by a system executive to avoid and screen unapproved access, abuse, change, or dissent of a workstation system and system available assets. System security includes the approval of access to information in a system, which is controlled by the system head. Clients pick or are appointed an ID and secret word or other verifying data that permits them get to data and projects inside their power. System security blankets a mixture of machine systems, both open and private, that are utilized as a part of ordinary employments directing transactions and interchanges among organizations, government orgs and people. Systems could be private, for example, inside an organization, and others which may be interested in community. System security is included in associations, endeavors, and different sorts of organizations. It does as its title clarifies: It secures the system, and additionally ensuring and managing operations being carried out. The most well–known and straightforward method for securing a system asset is by relegating it a special name and a comparing watchword. The reason for system security, essentially, is to ensure the system and its part parts from unapproved get to and abuse. Systems are powerless as a result of their inborn normal for encouraging remote access. Case in point, if a programmer needed to get to a machine not on a system, physical access would be crucial. ... Get more on HelpWriting.net ...
  • 34. Network Security And The Internet As time goes by, network security has become substantially more important, whether it be for a business, the military, or even a private computer. With the introduction of the internet, security became a major concern and it's only though a brief look recap on the history of security that we are allowed a better understanding of the emergence of the new technology that is released for the private and public sector. As mentioned earlier, the creation of the Internet allowed for a plethora of new threats. Despite the constant threats of malware and other annoyances, the architecture of the internet, when modified can reduce the possible attacks that can be sent across the network. Knowing the attack methods, allows for the appropriate security to emerge. Many businesses secure themselves from the internet by means of firewalls and encryption mechanisms. The businesses create an "intranet" to remain connected to the internet but secured from possible threats. Several key events contributed to the birth and evolution of computer and network security. Back during the first World War, the Allied army was having trouble deciphering secret German messages, while their own became heavily compromised. However, Polish cryptographers created an enigma machine in 1918 that converted plain messages to encrypted text. In 1930, Alan Turing, a mathematician, broke the code for the Enigma. Securing communications was essential in World War II. In the 1960s, the term "hacker" is coined by a ... Get more on HelpWriting.net ...
  • 35. Network Security And Security It is important for ABC Corporation to bring the network up to current security standards. Attempts to breach networks are becoming more sophisticated and difficult to defend against, as more powerful hardware is introduced and new security defenses become available leaving older measures unreliable. Aging networks that are improperly secured are more at risk than ever. It is not only important to ensure you have the proper defense at the perimeter but also internally on wired and wireless infrastructure. When considering network security controls, acceptable risk is often considered but needs to be minimized to provide the smallest attack surface for an attacker to exploit. Large Corporate Data breaches are on the rise due to ... Show more content on Helpwriting.net ... ABC Corporation has determined that a central authentication method that supports certificate exchange and integrates with an Active directory environment best suits the company's needs. According to InfoSec, "By definition 802.1x is an IEEE standard for port based authentication which was originally designed for wired network authentication and later leveraged to provide the same services to wireless. It is typically only implemented in large networks such as campus or enterprise networks." Implementing Radius as a security solution provides Ease of Management, Ease of Use, Support, Scalability and Security for the network and IT staff. Radius will allow for the use of Certificate sharing between devices that can be pushed out through Active directory and Group Policy. These policies and certificates can make the authentication process easier for the end user with automatic authentication or the ability to use the same credentials that are used in other systems and can be controlled on a per user basis. These same group policies will allow you to assign users to different networks based on roles within the company also known as Role Based Access Control (RBAC) further securing the network. (https:/ /www.securedgenetworks.com/blog/Why–802–1x–is–the–Best–Choice–for–Large–Scale–Wireless–Network) These studies by InfoSec also show that eliminating older wireless authentications methods greatly reduces risk. In an article publish by ZDnet in ... Get more on HelpWriting.net ...
  • 36. Elements Of Network Security Essay Elements of Network Security Introduction The primary objective of a network security system is to, in a cost effective manner, balance convenient access to legitimate users and inaccessibility to attackers. In a nutshell, the goal is to prevent connectivity to anyone intending to cause harm to the network. The harm to which this paper refers can come in the following forms: 1.Application–level security threats, such as e–mail viruses and attachments. 2.Threats to network infrastructure devices. 3.Theft of network connectivity services. 4.Unauthorized access from internal and external sources. 5.Denial of service attacks. Using a proper network security strategy reduces and, in some cases, even avoids the listed harmful ... Show more content on Helpwriting.net ... But these tools alone do not provide adequate system security В– a policy for system users, as mentioned above, that is based on the identification and prioritization of threats and assumed threats helps to maintain the network's health. The key feature of the policy is an ongoing training program that teaches all users the importance and value of including safe system user practices in their daily routine. Users are more likely to follow security practices if they understand the purpose of the practice and the consequences when these practices aren't used. Added to the training is a physical and electrical restriction of access to sensitive information and areas to users who have no business purpose for using such access. To ensure that the preventive measures are functioning effectively, regular audits of the security policy are performed. Log–on IDs are checked to verify their validity, and the users' activities are monitored to determine if the policies are being followed. Detection The next element of a network security system is system violation detection, or intrusion detection. This is an effort, should a system violator manage to breach the security of the network, to catch the violation before any real damage can be done to the network. The most common approach to intrusion detection is based on the belief that violations can be discovered by looking for abnormal system usage, or scanning the system in ... Get more on HelpWriting.net ...
  • 37. Internal Network Security Introduction The development of technology has brought Internet to become the mass communication media between people or companies. Through Internet, people can communicate with other people in various places. Companies can get many advantages by using Internet network to support their business. Therefore, companies are trying as hard as they can, and give high effort in protecting their network from attack and make sure that they have the best network security. Most people think that the threat of security attack is only come from outside the company. In fact, the attack from inside the company network is more harmful with high frequency to be happened. As written by Cryptek (2001), which based the argument from some articles, that... Show more content on Helpwriting.net ... If these vulnerabilities is not handle soon by the company, the information assets belong to the company can be easily steal from inside networks. Developing Secure Internal Network From all the attacks might threat corporate network either from outside or inside, company must think critically and fast to maintain the security of its network by building the good network security design. It is not enough for a company to rely their network security to the firewall only, since we've seen that the company network is also vulnerable with inside intrusion. To build a good internal security system, company must be able to integrate system, by using good hardware tools that can guarantee the flexibility, easiness to build and easy integration with other network. Company must also be able to build a good and strong internal security management, which allow us to control the system centrally. With the central monitoring, we can reduce the costs of developing the systems. The last tools may work is to integrate the security capabilities. As described by Cryptek (2001), the good management must be able to distributed user identification and authentication, distributed firewall capabilities and VPN technologies. There are some ... Get more on HelpWriting.net ...
  • 38. The Practicality Of Network Security Introduction: As a concept, the practicality of Network Security includes using activities designed to protect a user's network. Specifically, the core aim for this security is to protect the usability, reliability, integrity, and safety of data on that network. In Network Securitythere are numerous applications and software programs that are used by individuals which perform their own roles in securing network data. The most common and possibly the most essential application used to protect network data is known as a firewall. A firewall is a program that is designed to act as a barrier between an external network and the users. It is fundamentally designed to stop hackers, scammers, viruses, worms, and essentially any unauthorised... Show more content on Helpwriting.net ... Looking toward the future with the exponential evolution in technology, it is key to gather a more in depth and analytical study of the methodologies involved in firewall systems.Observing the current direction of firewall development can provide an idea of the improvements that can be made to keep up with an ever expanding technological society; especially as more and more people are being exposed, uneducated, to the dangers of the internet. Aim: By taking a look at the average household or business building, it is realised that a common aspect of their basic structure is the physical security mechanisms in place. These are in place to protect the privacy and integrity of what the owner possesses within. In terms of a network, this concept of preventing unauthorised access of one 's property is just as valid. However, in the situation of a network, a firewall is used as this prevention security system. The idea is simple; a user may have stored, on their network, a certain amount of private data that is personal to them or their business. Thus, a firewall is put in place in order to prevent anything or anyone that does not have authorisation from accessing any of this data. If an unknown and potentially dangerous individual were to try to get into a building complex, the physical security appliances would react and prevent this from happening. A firewall works the same way; however it deals with potentially harmful packets entering the network. These packets are ... Get more on HelpWriting.net ...
  • 39. Network Security And Its Effects On The Network Abstract In today's IT world, network security is starting to get more attention. In the past, companies' network infrastructures were capable of managing low amounts of attacks on the network. This is not the case today. The number of online attacks is getting bigger and bigger. Today children from age 6 are capable of breaking into someone's network system. For attackers, it does not matter whether it is a large or small business or an individual computer . If they find a glitch in the network, they will attack the system. Also, not too many people are conscious about how network security is important in today's business. This paper will discuss network security, categorize type of hackers, and define types of attacks and security ... Show more content on Helpwriting.net ... 2.Enforcement provides analytical form of all network traffic flows and aim to maintain the confidentiality(C), integrity (I), and availability (A), also known as the CIA triad, of all systems and data on the network. In addition, the roles of the CIA triad are: Confidentiality is set of rules that involve the protection of data from unauthorized entities. Integrity has a role to make sure the modification of data is controlled in a specified and authorized manner. Availability ensures that data are accessible whenever needed by the company (Palo Alto Networks, nd). Even though the use of the CIA triad to describe security purposes is well recognized, some in the security area are considered to be necessary to present a complete picture of additional concepts. The following two concepts are the most common (Stallings & Case, 2012): Authenticity – The property is original and can be identified and trusted by the business. This means that users are checked and validated before each input reaches the system which indicated that it came from a trusted source (Stallings & Case, 2012). Accountability has the security goal to make sure that the activities of entity could be uniquely traced to that entity. Organizations must be capable to trace a security breach to an accountable party (Stallings & Case, 2012). 3.Auditing is the network security process that requests checking back on applied measures to conclude how well they comply with the security ... Get more on HelpWriting.net ...
  • 40. Elements of Network Security Elements of Network Security Louis Kibby Network / Datacom I TCM 537 Mr. Stuart Sandler November 28, 2005 Elements of Network Security Introduction The primary objective of a network security system is to, in a cost effective manner, balance convenient access to legitimate users and inaccessibility to attackers. In a nutshell, the goal is to prevent connectivity to anyone intending to cause harm to the network. The harm to which this paper refers can come in the following forms: 1.Application–level security threats, such as e–mail viruses and attachments. 2.Threats to network infrastructure devices. 3.Theft of network connectivity services. 4.Unauthorized access from internal and external sources. 5.Denial of service attacks. ... Show more content on Helpwriting.net ... 28, 2001). Because this is an automated system, it depends on a mechanical process of discerning what is good or bad. This at times can lead to false positives or negatives, or the blocking of a legitimate user and giving access to a system violator. This weakness in the Cisco IDS requires that an additional form of violation detection be used. In addition to the IDS, LADWP has a staff of technicians who provide continuous network monitoring. In addition to keeping track of the alarms detected by the IDS' Director Platform, these technicians also use other tools to keep an eye on network traffic levels, as well as performing routine vulnerability probing. One key tool used is Lucent's VitalSuite. This tool uses real–time event analysis, which helps to identify network resources that have exceeded acceptable levels. To properly use VitalSuite, the technicians establish what they believe to be normal network activity. This norm is then used as a baseline to help in the identification of any abnormal network traffic. Once the baseline is established, levels of severity are set. The levels are minor, major and critical,
  • 41. with critical meaning immediate action is required. The only time the system alarms is when a critical error is detected. During normal operations, the technicians monitor VitalSuites' display, looking for unusual events. These events can ... Get more on HelpWriting.net ...
  • 42. Security Threats Of Network Security As the technology is growing the security threats are also increasing at higher rate. So, as to protect an organization from such network security threats severe actions and several steps have to be taken by network security administrators. In any large organization that is having large number of big servers, firewalls and interconnected network of hundreds of computers, security is one of the most important aspects so as to secure its network from intruders. Within the organization, all the computers and devices are interconnected in a LAN network or using a WLAN (Wireless Local Area Network). So, the most important task of network security administrator to secure its internal as well as external network from intruders because there are... Show more content on Helpwriting.net ... By sniffing a single wireless network, an intruder can access all the incoming and outgoing traffic over that wireless network resulting in heavy loss of confidential data to an organization. If any intruder able to crack firewall and he will be able to access wireless network's internal network and can read all the confidential data and also can inject malicious packets in the network so as to route the packets to some other destinations. There is large number of tools available in the market through which a wireless network[1] can be cracked and sniffed such as: 802.11 wireless network detector named Kismet, which is a wireless LAN detector named NetStumbler which uses 802.11b and WireShark for analyzing a network. In order to secure a wireless network from intruders several measures has to be taken care while implementing wireless network within the organization.Encryption algorithms are used to encrypt data over wireless network so that network cannot be easily read by the attackers. There are several authentication techniques that can be implemented to secure data over wireless networks such as: biometric technique, OTP method and Single Sign on techniques are used. Attackers use several methods to crack wireless passwords like brute forcing, so as to secure passwords strong passwords with special characters and keys has to be used making it difficult to crack.Wi–Fi Protected Access (WPA) or Wired Equivalent Privacy[4] (WEP) encryption is used by most of the ... Get more on HelpWriting.net ...
  • 43. Network Server Security Network Server Security The network server at focus in this study is one utilized primarily for data storage and internal application sharing as well as for securing numerous desktop computers connected to the network. This work will describe access control that would be put in place for each of these with explanations on why these would be used. A message of at least 20 characters will be generated using a Vigener cipher keys that is at least three letters long, The message will be encrypted along with an explanation of how secure this message is and why. The form ofsecurity chose for the network will be identified with physical and electronic security considered. Included will be virus checks, firewalls, and encryption protocols as well as any access protocols explaining how each secures the network. This work will additionally list three specific project goals which if met would reduce or alleviate any problems or deficiencies. I. Database Access for Data Storage and Internal Application Sharing and Desktop Computers Security controls for the network system involves the creation of access and use for each user or user group. The control is used to "restrict a list of possible actions down to the allowed actions. For example, encryption can be used to restrict access to data, application controls to restrict processing via authentication, and DRM storage to prevent unauthorized accesses." (Securosis, 2012) The necessary controls are determined by "first listing out ... Get more on HelpWriting.net ...