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Virtual Private Network ( Vpn ) Connections Essay
Virtual Private Network (VPN) connections are important securities connections for companies.
These connections enable corporations to keep and maintain good relationship with partners,
employees and contractors. A VPN is a virtual version of a secure, physical network. It is connected
to the outside world trough internet. It helps to protect corporate data and public critical information.
Supermarket and Airline companies use VPNs to enable their employees, contractors and partners to
get access to data from the central office no matter their location. The hardware VPN is a virtual
private network based on a single, stand–alone device which provides remote offices or individual
users with secure access to their organization's network by using the shared public
telecommunications infrastructure and standard security measures. Barracuda SSL VPN appears to
be the one that can fulfill these requirements. In this essay I am going to present VPN connections,
advantages and disadvantages of the Barracuda SSL VPN, security provided by the Barracuda SSL
VPN hardware, and his features.
Virtual Private Network is a way to communicate securely with a company or corporate servers
from long distance at public network. It is an important source of transmitting important data across
the web. VPN technologies implement restricted–access networks that utilize the same cabling and
routers as a public network, and they do so without sacrificing features of basic security. A VPN
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Virtual Private System : It Uses Public Network Essay
VPN
VPN are extremely regular utilized technique nowadays as a part of companies where they need to
keep communicate with their unreachable branches at some point in other piece of globe. It permits
authorization to get to companies Intranet in a protected and effective way. Virtual private system: it
uses public network to localise remote user or sites together. It uses internet to connect two networks
with each other. The VPN uses "virtual" connections routed via the Internet from the business 's
private network to the remote site or employee. By utilizing a VPN,company ensures security –
anybody capturing the encoded information can 't read it.
Why VPN's are essential?
VPNs give an essential support of organizations, governments, military associations, and even
people. VPNs give secure access to your local area network. Without VPNs, getting to delicate data
remotely would not be conceivable. VPNs permit two or more systems to communicate with each
other. For instance, a branch office of a bank situated in Papatoetoe and its home office situated in
Auckland associate with each other through the Web safely to share their assets, (for example, bank
statements, bank explanations, contract records, and so on.) together. With a VPN, both areas can
communicate together as one utilising the web safely.
Classification of VPN:–
VPN are classified into two types:–
site–to–Site VPN
Remote access VPN
Site–to–site VPN
A site–to–site VPN permits two or more systems to be
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Virtual Private Networks Commonly Called As Vpn
1. Overview: Virtual private networks commonly called as VPN. It carries request among the
customers, servers and computers to deliver protective support to the customers. These VPN's helps
the users to connect from the senders to the receiver with a secure connection. It is one of the easiest
and safest methods to link to any remote network. The term is derived from the blend of virtual
private networks that separates the congregation of nodes and similarly VM models which protects
the resources to host functioning frameworks. VPN connects establishes link from one end to the
other end of the customers systems remotely from distant locations. This was a new innovative
means of connecting Local Area Network (LAN) as well as to Wireless Local Area Network
(WLAN). It safeguards the data of the customers using different protocol connections. Mostly, the
data is encrypted after transmission and also after obtaining at the receivers end. A means of security
layer is used during the encryption, and in obtaining the system addresses at starting. Apart from the
other leased connections, VPN offers a lease less establishment throughout the universe. This was
the one of the advantages of VPN; moreover it provides data security to the systems during
encryption, offers flexibility to the organizations that works for distant locations and similarly to
users of the internet. It saves most of the time, budget and energy of the employees who works
remotely. Since the leased lines are
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Using A Virtual Private Network
VPNs
By
Samantha Fitzpatrick
Prepared for
Dr. Ford
30 April 2015 Introduction There is a growing need to connect to internal networks from locations
other than the regular and secure office. Employers and organizations need to realize that employees
often need to connect to internal private networks from home, hotels, airports, etc. A solution for this
problem is using a virtual private network (VPN), which is a network that uses public network
paths, but maintains the security and protection of private networks. Secure communication is
expensive, but VPNs allow organizations to have a number of discrete communication services for a
large amount of clients. It is cheaper to have a copious amount of virtual networks on a couple
physical devices than having a copious amount of physically discrete devices accomplishing the
same objective.
Methodology
VPNs transmit data through secure tunneling. A packet is first encapsulated in a new packet with a
new header and then sent through the tunnel, which is normally IPSec, L2TP, PPTP, or SSL. Both
points of the tunnel need to support the protocol used. To provide access to the internet, the packet
with a private IP address can be sent inside of a packet with a global IP address. For security, VPNs
use encryption to make sure packets are indecipherable without the proper keys, which provides
data confidentiality. They also provide data integrity using a message digest to ensure the
information has not been tampered with
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Using Virtual Private Networks ( Tyson )
The world today is connected nearly in every way. The Internet has revolutionized and has become
one of the most powerful tools that any business can have in today's world. If you wish to have a
successful and lucrative business you need to be connected to the internet in some way. Companies
in today's age are so big that they not only just have one office many of them have a headquarters
and then they might have regional offices and or subsidiaries. Staying connected to all these
different offices is essential. And although the internet provides a way for companies how to do that.
If they do not secure there internet connection they might be hacked sensitive information pertaining
to the business might be seen by competitors or unwanted ... Show more content on Helpwriting.net
...
Imagine space being the internet and a public spacecraft being the way to travel between planets.
Consider the spacecraft's as webservers. Now traveling in these spacecraft is unsafe anything can
happen everybody can see what you're doing and so on. Now if you are a company and you want to
travel to another planet (another office) and have sensitive information then how could you travel
though Space (internet) in secure manner? The only way would be if you own your own spacecraft
to travel through space. Your own spacecraft would be consider your VPN. Some of the benefits that
a good VPN should have are: security, scalability, reliability. Intruders trying to computer the data
traveling through the VPN tunnel should fail. A VPN should be able to grow adapt if the business
grows or gets smaller and should be able to handle these changes without having to replace the VPN
totally. The VPN should not go down randomly and users should be able to get on the VPN at any
time without hassle each user should have the same connection quality even if the VPN has reached
the maximum of users. Extend their network across multiple geographic connections at lower cost.
Can save commuting cost for certain employees if working from home. Now all VPN are not
created the same. There are not set guidelines to set up a VPN there is no right or wrong way it
usually mostly depends on what the VPN is being used for and on the administrator preferences. The
most common and
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Virtual Private Network ( Vpn )
What is VPN? A Virtual Private Network (VPN) is a network constructed by using a local public
network to connect to a private network. The invention of VPN and the main approach behind this
has changed the world over the last decades. This network was initially created by many big
companies and other organizations, but it wasn't created for the end users. The main motive behind
this technology was that the different companies wanted their network to be secure and private and
also they also wanted their network to be accessed by their other offices at the different locations
because only this network can hold the secrets and the important information about the particular
company. Now, what makes Virtual Private Network (VPN)? There are ... Show more content on
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In an extranet, the VPN connections are between company to their partners or the customer. A well–
constructed VPN can benefit to the company such as that it can extend their geographical network.
Secondly it could be cheaper in terms of the operational cost in comparison to the WAN's (Wide
Area Network). It also reduces travelling costs for the employees as they can access the company's
network remotely. The use of well–constructed VPN can improve network topology and it can also
provide overseas networking opportunities. The use of a good VPN can provide quick Return on
Investment (ROI) in comparison to the WAN (Wide area Network). A well–constructed VPN has
different ways to keep the data of a particular company secured and private. First one is Data
Confidentiality, in this method VPN provides the most imperative service. As the private data of the
company travels through a public network, here data confidentiality is important and it can only be
obtained by the proper encryption of the data. This is the procedure of taking all data that from one
computer and sending to another. It should be also encoded in such a manner that only the other
computer can decode it. Mostly every secure VPN's includes one of these protocols to distribute the
encryption. The protocols that VPN uses are Internet Protocol Security (IPsec), PPTP (Point to Point
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Virtual Network : Virtual Private Network
VIRTUAL PRIVATE NETWORK
Introduction Along with the rapid development of internet, there is an increasing demand to connect
to internal networks from remote sites. When employees work from home or go on business trips,
they want to connect to the internal private networks of their companies over a secure connection.
The demand of secure connection to internal network led to the technology of virtual private
network A VPN is a private network technology that provides a way of protecting information that
being transmitted over a public infrastructure (usually the Internet). As the name suggest, VPN uses
"virtual "connections to connect remote site or remote employee to business 's private network.
Users could build a virtual private tunnel to enter an secure internal network and to access resources
and information. In this paper, I will discuss the definition of VPN, the types of VPN, how does
VPN work by using different protocols, and what are some potential security risks and
considerations that need to be taken into account when implementing a VPN.
I.What is VPN? Virtual Private Networks (VPN) are point–to–point connections across a private or
public network such as the Internet. In a VPN, private two or more devices are communicated
through a public network such as the Internet. Therefore, the communication is virtually but not
physically there. The communication is also private because even though the devices are
communicate over public network(internet), the
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A Interview On Virtual Private Network
Assignment 1 Unit: BN305 Virtual Private Networks Student name: Gjorgji Babarovski Student ID:
MIT 140626 Teacher name: Paul Carnie "VPN, or virtual private network, is a network that is
constructed by using public wires – usually the Internet – to connect to a private network, such as a
company 's internal network. There are a number of systems that enable you to create networks
using the Internet as the medium for transporting data. These systems use encryption and other
security mechanisms to ensure that only authorized users can access the network and that the data
cannot be intercepted. "– Vangie Beal, 2015 [8] Part I 1) On figure 1 obviously we can see Site–to–
Site network diagram with 3 Ethernets and they are all ... Show more content on Helpwriting.net ...
[1] 2) Internet Protocol Security (IPSec) is a protocol suite to make Internet protocol more secure by
authenticating and encrypting every IP packet of one communication session. Beside from the
changes that we have done for the first task, we need to implement IPSec in the tunnel, so figure 1
would be able to run GRE over IPSec. IPSec involves many component technologies and encryption
methods, also IPSEC uses to main protocols to create security frame work: Authentication header
and Encapsulating security payload. Authentication header does not provide encryption, that's mean
only authenticates the sender of the data. If we use authentication header alone, it can provide week
protection and also it can show some problems if the environment uses NAT. While encapsulating
security payload provides the same security services as authentication header, except the only
difference is ESP can encrypt the payload. IPSec technology is competently invisible in its operation
because it is based in network level. Another thing is the end users are not even directly interacting
and are not required to learn about IPSec encryption. [2] The advantage to monitor all traffic that
going through the network is because IPSec is based in network level. Also IPsec is not application
dependent, so we do not need to worry about application compatibility issues. Also there is some
disadvantages, the role to encrypt and
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Study And Implementation Of Virtual Private Network Essay
Study and implementation of Virtual Private Network (VPN) in Windows Server Network. Abstract
In this project I will pursue my knowledge about VPN and I will show how it works and how it will
provide the security to the users. In this project I will establish a secure network using VPN which
will provide users the proper and the faster access. The users will be able to use the network from
any place with the specific username and password provided to every user. Users will stay
connected with their Head offices and any other regional offices according to their need. It will work
like a tunnel as the network will be connected point to point. No one will be able to use the network
without username and password. I will make this project on VMware player with Microsoft
Windows Server 2008 r2. I will design a network with two clients and a server which will be able to
control the access of the users and will be a secure network so that no one can access it without the
permission of the Administrator. Weekly Plan Week Job Performed Week 1 Project Proposal Week 2
Going through the concept of VPN Week 3 Referring the concepts of VPN Week 4 Understanding
the working of VPN Week 5 Installing the VPN and allow the Administrator to put security for
clients. Week 6 Development and Implementation Week 7 Testing Week 8 Compile all the
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An Open Public Network / Environment Essay
Introduction Virtual is something that is not real, but can be produced by computer imaging. So
when you have a VPN, it is considered to be private interaction with two or more devices. The way
that these two or more devices can communicate with one another is through the use of the Internet
wish is a public network and not private. So the communication that takes place between two or
more devices is virtual but not physical form. Private the meaning of is to keep something hidden
like a secret from others, or in this case from the public. Although two or more devices are able to
communicate with one another on an open public network/environment, there will be no third party
who can disturb this communication. Since a third party in unable to disrupt there communication it
is also unable to receive the information that is being exchanged between the two communicators. A
network is terminal nodes and links that make it possible for two computes or other devices
electronically pass data to each other along data connections. These computers and devices are able
to communicate with one another via cables and wires, so in turn a VPN is a network. It also has the
ability to transmit data long distances very productively and smoothly with no problem. VPN has
been associated with remote connectivity services in the past such as the (PSTN), Public Switched
Telephone Network. This network is starting to be coupled with IP networks. In the past IP network
enterprises had broadband
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Tutorial Video : The Virtual Private Network Tutorial Video
Virtual Private Network Tutorial Video
Overview
The Virtual Private Network (VPN) Tutorial Video was a project that I was tasked with as part of
my ICT Student Technologies internship responsibilities. With this project, I was able to employ
concepts and tools learned in multiple former classes to compose a video that effectively appealed to
a specific audience, yet contained appropriate rhetorical elements to suit many other potential
audiences. Additionally, this project employed multiple rhetorically influential aspects as a means to
promote logical and emotional connections. To promote this synthesis, I scripted, recorded, edited,
and published (in part with my fellow intern) this video with foundational rhetoric in mind. By
composing ... Show more content on Helpwriting.net ...
Yet, despite the existence of this tutorial, both my supervisor and myself had concerns about how
usable this textual document may be for older audience members, leading to my suggestion of
composing a more thorough video tutorial. This idea was enthusiastically accepted and thus the
Virtual Private Network (VPN) Tutorial Video project was born. Knowing that the open enrollment
period has swiftly approaching, I was asked to work on this video in conjunction with my fellow
intern. We completed this project in under a week, including scripting, recording, editing, proofing,
publishing, and posting to the KnowledgeBase along with the textual tutorial. Scripting and
recording were primarily my responsibility, as was posting to the KnowledgeBase. I undertook some
editing and publishing responsibility, but the majority of those elements were performed by my
colleague.
Audience
As mentioned above, this project was originally conceived to suit an older, less technologically
savvy audience trying to download a software product. With this in mind, I made sure to pay special
attention to the language used in the script as well as the audio and video recording. The script was
heavily scrutinized by myself and my peers to ensure that no misinformation was accidently
portrayed. Moreover, I emphasized approachable and understandable language; the VPN download
process is a bit complicated so I wanted to facilitate easier access with the tutorial that did not
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Vpn
VPN
Introduction:
VPN stands for Virtual Private Network. VPN is a data network connection that makes use of the
public telecommunication infrastructure but maintains privacy through the use of a tunneling
protocol and security procedures. It operates much like a Wide Area Network (WAN). Most
companies actually leased lines, but in either case both solutions are very expensive. As the Internet
became more widely available people started creating VPN solutions that took advantage of the
cheap network access. The idea was to use the Internet 's existing links to create a virtual circuit.
Advantages and Disadvantages of VPN:
Virtual Private Network presents some advantages over the traditional network technologies. VPN
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Extranet: Extranet VPNs between a company and its strategic partners, customers and suppliers
require an open, standards–based solution to ensure interoperability with the various solutions that
the business partners might implement. The accepted standard for Internet–based VPN is the
Internet Protocol Security (IPSec) standard. Equally important is traffic control to eliminate
bottlenecks at network access points and guarantee swift delivery of and rapid response times for
critical data. (A)
VPN Protocols: One of the most popular protocols for VPN is PPTP, which stands for Point–to–
Point Tunneling Protocol. PPTP is actually an extension to PPP (Point–to–Point Protocol) which is a
standard for a traditional dial– up networking. What PPTP does is packaging data within PPP
packets, and then encapsulates PPP packets within IP packets, that is called datagrams, so they can
be ready for transmission through an Internet–based VPN tunnel. PPTP supports authentication,
encryption and packet filtering. The second popular protocol for VPN is IPSec, which stands for
Internet Protocol Security. One of IPSec features is that it includes an integrity check that ensures
that no packets are deleted, added or tampered with during transmission. The other feature is that
IPSec uses machine level certificates which authenticate
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Lan Virtual Networks
There are two main types of virtual networks. These networks include virtual private networks and
virtual local area networks. Their acronyms are VPN for virtual private network and VLAN for
virtual local area network. Both of these virtual networks have specific uses and functions. VPNs
and VLANs differ in several ways because of the way they are used. To begin with, a virtual private
network is a tunnel between two systems, a remote network or a device and a private network
elsewhere. This tunnel is encrypted and uses the Internet. A virtual local area network is simply a
LAN that is virtual. It is mainly used to mitigate broadcast traffic since it splits up the broadcast
domain into pieces. It is split using switches and connected to other
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Virtual Private Network : Setup And Cracking
VIRTUAL PRIVATE NETWORK
SETUP AND CRACKING
Matthew Canario, Sami Alghamdi, Ihab Nazir and Moath Al–Anbar
University of Ontario, Institute of Technology
Oshawa, Ontario
Abstract– A VPN can be defined as the private network in which a public infrastructure such as
internet is used for connecting the remote users or sites. As suggested by the name, virtual
connections are used in the VPN and they are routed via the Internet from the private network of the
business to the remote employee or site. VPN is a latest technology that may be applied to both
LAN & WLAN. In the VPN, privacy of data is maintained by using some procedures of the as well
as protocols of tunneling. This will result in the encryption of the data at the sender's side which is
further forwarded through the tunnel and decryption is performed at receiver's side.
This paper represents the way in which a VPN is set up and configured with weak parameters &
how it may be broken. It also includes various authentication techniques.
Keywords–Virtual Private Network; Authentication; Encryption; Keys;
1. INTRODUCTION
A VPN stands for Virtual Private Network. It is a communication network in which any combination
of technologies is used for securing the connection which is tunneled via an otherwise entrusted
network or unsecured network. In the VPN, a dedicated connection for example leased line is not
used, rather, a virtual connection is created between geographically isolated users & the
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A Report On Virtual Private Network Essay
Statement of problem:
The primary aim of this project is to keep VPN safe which also means keeping our information and
credentials safe.As of now the working principle and the protocols related to VPN i.e Virtual private
network is understood.VPN is considered to be invisible and impenetrable by most of its users and
the organizations providing this service till date but the research carried on by NTA monitor Ltd.
shows that these VPN 's are the weakest point in their perimeter.VPN 's are the most attractive
targets for the hackers. There are many flaws in VPN services which can give a hacker, a lot of
information about the users of VPN.Virtual Private Networks carries themuch sensitive information
over an insecure network. Most of the users believe VPN 's keep their information secure that is
what VPN 's are there in market but its is shocking that VPN 's also have remote exploitable
vulnerabilities through which one can gain an unauthorized access to the Network or can alter the
traffic in the Network etc.
One such problem which is there in Virtual Private Networks is USER NAME ENUMERATION
VULNERABILITIES.Most VPN use IKE i.e Internet key exchange aggressive mode with an
authentication method. The authentication method used in this case is PSK i.e Pre Secured Key
authentication. PSK authentication method is a well known authentication scheme but sometimes
terminology may differ for e.g username may be interchanged with ID or Groupname and password
may interchange with
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Network Virtualization, Data Centres And Performance Of...
1. Introduction 1.1. Project Background This section will explain the background of network
virtualization, data centres and performance of internal network I/O. The paper compares and
analyses, the similarities and differences of software based switch and physical switch. We also try
to compares the switching methods used by the two switches. Network Virtualization Network
virtualization can be explained as a network environment in which multiple virtual networks coexist
in the same physical device. A virtual network is a collection of network enabled virtual devices and
virtual links. Network virtualisation segregate the existing Internet Service Providers (ISPs) into two
separate entities. Infrastructure Providers (InPs); ... Show more content on Helpwriting.net ...
Since VLANS are secluded entities they provide high level trust and security, as well as time and
cost effective network management (IEEE, 2011) (Chowdhury & Boutaba, 2010). VPN is a
dedicated communication between multiple geographically separated sites. VPNs belong to a family
of overlay networks that use IP tunnels to form a virtual network on top of the Internet. These
tunnels use cryptographic techniques to provide robust security and privacy. To a remote user, VPN
provides all the benefits of a private network, while corporations benefit from the low operational
costs, high security, and instant global coverage offered by it. Virtual private networks have gained
immense popularity among commercial and defence organizations because of their capability to
provide secure connectivity at lower costs. The Internet is considered the cornerstone of
connectivity for organizations to expand their operations and increase revenues. As organisations
grow, different methods must be employed to provide secure and efficient connectivity among
geographically distributed branch offices, strategic partners, and mobile/telecommuting employees.
Although several technologies exist, most recently Internet–based virtual private net– works (VPNs)
have evolved as the most secure and cost–effective means of
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Virtual Network : Virtual Private Network Essay
Today, the technology VPN (Virtual Private Network) has established strong recognition among IT
people and every administrator is committed to organize VPN–channels for employees working
outside the office. Virtual Private Network is an association of individual machines, or virtual LAN
network, which ensures the integrity and security of data transmitting. It has the properties of a
dedicated private network and allows data transfer between two computers via an intermediate
network such as Internet. VPN has a number of economic advantages over other methods of remote
access. Firstly, users can access the corporate network, without installing with its switched
connection, thus eliminating the need to use modems. Secondly, there is no need for the leased line,
which helps to reduce a cost. The main reason that companies use secure VPN, is that they want to
send "sensitive" and / or confidential information over the Internet, without fear that someone will
be able to intercept and read the transmitted data. Providers implementing technology trusted VPN,
interested in transferring data at a pre–specified routes through a network of one or more trusted
providers. Differences between trusted and secure VPN stand at the stage of defining requirements
to the network. Secure VPN guarantee the confidentiality of information transmitted, but not
responsible for the transmission routes. Trusted VPN provides the necessary routing and delivery
time, maintaining the required level of
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Setting Up Sophos: Site-to-Site Access VPN
Computer Technology Department – College of Computer Studies
De La Salle University
Network Security and Administration (SECADMN)
3.1 Virtual Private Network (Site to Site) Laboratory Report
Group 1
Mechanics
Fadrilan, Paul Jovie R.
Data Presentation
Magat, Rodolfo M.
Analysis
Conclusion
References
Submission Time
Introduction
In a business or an organization, communication is very important especially for long distance or
remote places. When a business or an organization grows and needs to have branches to extend their
reaches, they have to be connected to these branches in order to keep their business going. Their
connection may ... Show more content on Helpwriting.net ...
6. Configuration of Firewall Functionalities/Services and Rules (methodology) – process done via
web GUI and configurations implemented on DHCP Settings, IP Masquerading, Firewall Settings
and DNS Settings. These configurations would allow a certain host to connect to the internet even
without a router or modem.
Results:
Figure 1–1. Created a new DHCP Server
This service is not one of the essential purposes of the firewall yet it is a good feature of the firewall
to also implement this service for the administrator not to maintain another server.
Figure 1–2. Created a new Masquerading Rule
For this masquerading feature, the firewall allows other workstations to have an internet access
without using NAT. In this configuration we tried to use different rules in order to implement this
function but only one on the figure allowed the internet access.
Figure 1–3. Created new Firewall Rules
There were 2 rules applied in order to allow web access. The 1st rule applied is used to allow any
http request from the internal network to any network outside. By implementing this rule other
requests different from the latter will be denied since the firewalls have a default "deny all" at the
end of its firewall rule list. This is the reason why google.com cannot be accessed because it runs on
a https
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Virtual Network : Virtual Private Network
California State University, Los Angeles
Department of Electrical and Computer
Engineering
Virtual Private Network
Guided by:
Dr. Charles Liu
Submitted By:
Harsha Bhoomesh (CIN–303208495)
Department: Electrical Engineering
Virtual Private Network 2
Contents:
 Abstract 3
 Virtual Private Network
 Introduction 4
 VPN Topology 6
 Types of VPNs 7
 Components of VPNs
 Introduction to GNS3 10
 Work of Mine
 Network Topology 15
 Configuration 17
 Various Scenarios 21
 Conclusion 24
 References 24
Virtual Private Network 3
ABSTRACT:
Network security is a serious matter. A network allows you to share information and resources, but it
also lets computer viruses, human intruders, or even disgruntled employees do far more damage
than they could on a single machine. To overcome this drawback we will use Virtual Private
Network.
A VPN is a supplement of an enterprise's private Internet across a public network such as the
Internet, creating a secure private connection, essentially through a private tunnel. VPNs securely
convey information across the Internet connecting remote users, branch offices, and business
partners into an extended corporate network.
This Research paper will illustrate how server communication is achieved by achieving the
principles of security like Authenticating and encryption (L2TP) i.e. using ESP, AH, PPTP & IPSec
in between Site–to–Site (two or more customer sites (LANs) are connected through the service
provider) using GNS3 displaying the use of
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The Concept Of Virtual Private Network
Executive Summary
The report focuses on the concept of virtual private network. Virtual private network enables remote
connections without the need of cables or leased wires. It leverages the capability of public
network(i.e. the internet) to provide remote connections between different sites globally.
Further, the report introduces the scope and objectives of Design Sheet metal private limited, the
organisation which is trying to expand its operations throughout the Australian continent. The report
proposes the implementation of virtual private network technology through CISCO AnyConnect
Secure Mobility. There is a coherent relationship identified between the objectives of Design Sheet
Metal and the benefits realised by VPN ... Show more content on Helpwriting.net ...
Technically, VPN extends the concept of Local area network, where the main LAN at the company
headquarters is connected to multiple LANs in different company locations and individual users
(Protocols, 2008). Most organizations develop an intranet, which is an internal network used only by
company employees. It allowed all the employees to have one single access point for company
resources and updates. Implementing a VPN allowed remote users to access the intranet from any
location or even their homes (Tyson & Crawford, 2015).
Design Sheet Metal
Design Sheet Metal Pty Ltd is a manufacturing and packaging company which provides leading
supply of flashings and rainwater products. Established in 2003, the company has the reputation for
providing quality products and has one of the fastest turnaround times i.e. less than 24 hours.
Currently, it is looking to expand to all parts of Australia beyond the current locations, namely,
Bendigo, Ballarat, Mornington and Bellarine Peninsula, Geelong and Melbourne CBD.
They provide delivery to 70 – 80 sites on a daily basis and would like to keep up the same level of
service in different Australian states. The office Head Quarters will be based in Melbourne with the
officials travelling to the different sites on occasions for recording, monitoring and evaluating the
ongoing progress for expansion (Metal, 2015).
This expansion has led to
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Virtual Private Network ( Vpn )
Introduction – The Past:
Thirty years ago, there was no such need of privacy and data encryption as the Internet age had not
taken off. In the 90s, VPN technology was still a fairly new technology but was predicted that it
would be the next big thing in the early 2000s. Only large companies could afford the price to use
dedicated lines to connect to remote locations. However, the disadvantages of the lease line are quite
clear: Although large companies have the capitals and needs for building private networks, small
and medium companies could rely on the less expensive, packet switched X.25 network. As the size
of the Internet continued to grow, both small and large companies began to connect their private
network with the public network. This brings a convenience but with one obvious problem – privacy
and security.
Virtual private network (VPN) was developed in 19XX by Stan Hanks, who build IP VPN based on
TCP/IP–over–X.25 stack for CSNET. Its goal was to ensure privacies and data integrities of
communication and information. Thanks to the helps of many engineers and people such as XXX
decided not to patent the XXXX technology when he was in Microsoft, VPN technology was
growing rapidly during the early 2000s. Over the year, its flexibilities make travelled businessmen
able to connect back to their companies' networks, it also made employees work from home
possible. Although some may argue that this makes the line between home and work space less
clear, others claim that it
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A Virtual Private Network ( Vpn )
Introduction A virtual private network (VPN) is a private network that extends across a public
network, same as the Internet. It allow user to send and receive data across networks that can be
either shared or public as if it's their own device were connected on private network. Application
running across VPN have functionality, security, management of the Private network. VPN allow
employees to securely access a corporate intranet while located outside the office site. They are used
for geographically separated office of an org. to connect as one network. Individual user can use
wireless transaction with VPN, to circumvent geo–restriction and censorship, or to connect to proxy
servers for the purpose of protecting personal identity and ... Show more content on Helpwriting.net
...
To prevent any kind of disclosure of private information, VPNs allow only authenticated remote
access using tunneling protocols and encryption techniques. The VPN security model provides these
measures: Confidentiality: if the network traffic is sniffed at the packet level (see network sniffer
and Deep packet inspection), an attacker would only see encrypted data. Sender authentication to
prevent unauthorized users from accessing the VPN. Message integrity to detect any instances of
tampering with transmitted messages. Authentication Tunnel endpoint are authenticated before
secure VPN tunnels are created. User created remote VPN. May use passwords biometrics two
factor authentication or other cryptographic method. N–N tunnel often use passwords or digital
certificate for security. Keys are permanently stored to allow establish automatically without admin
know. Routing Tunneling protocols can operate in point to point network topology which
theoretically is not vpn, because vpn are to support arbitrary and changing sets of
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IPsec and VPN
IPSec
Internet Protocol Security (IPsec) is a set of protocol for establishment of securing Internet Protocol
(IP) communications. Safety on data was established through process of authentication and
encryption of each IP packet in every communication session. At the beginning of the session,
mutual authentication between agents will established and cryptographic keys to be used will
arbitrated during the session. IPsec can be applied in protecting data flows not only between pair of
hosts and pair of security gateway but also for between a security gateway and a host.
IPsec provided end–to–end security in the Internet Layer of the Internet Protocol Suite. It is different
to other Internet security systems which is being use all ... Show more content on Helpwriting.net ...
VPNs can be either remote–access or site–to–site. In a corporate setting, remote–access VPNs allow
employees to access their company 's intranet from home or while traveling away from the office,
and site–to–site VPNs allow staff member in geographically disparate offices to share one cohesive
virtual network. A VPN also be used to interconnect two similar networks over a dissimilar middle
network. VPN systems may be classified by the protocols used to tunnel the traffic, the tunnel 's
termination point location, whether they offer site–to–site or remote–access connectivity, the levels
of security served or the OSI layer they present to the connecting network.
Therefore, in order to prevent exposure of confidential information, VPNs generally allow only
verified remote access and make use of encryption techniques. VPNs provide security by the use of
tunneling protocols and through security procedures such as encryption. The VPN security model
give confidentiality such that even if the network traffic is sniffed at the packet, an attacker would
only see encrypted data, sender authentication to prevent unauthorized users from accessing the
VPN and message integrity to detect any occurence of manipulating with transmitted messages
Secure VPN protocols include the following; Internet Protocol Security
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Using A Virtual Private Network ( Vpn )
Section 1.0
The world is constantly changing especially in technology. Each day new software and hardware is
created to accomplish tasks that were not possible before. These new software's and hardware's
offers new problems to come with these new accomplishments. Businesses are constantly looking
for ways to make their employees more efficient. Allowing employees to communicate not just in
the office, but remotely is being a requirement at this day and time.
This company could make use of a Virtual Private Network (VPN) that routes through the firewall.
The VPN would allow easy access to the company network for authorized employees. A VPN would
allow the company to have employees that telecommute, work from home, or remote employees. It
would allow our employees that travel frequently – like salesmen – to connect from anywhere they
may be. The VPN would allow for a more flexible work day, and help work get done when it needs
to be done instead of during normal business hours. The VPN will run through the company firewall
to help limit the traffic through to legitimate business traffic.
The company must first be aware and understand the risks of a VPN and firewall. This knowledge
will help the company make the right decision for this technology. A VPN and firewall solution is
different for every network, and must be customized to this company's network. There is also risks
to not using these tools. It is important for the company to see this risks as well, so
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Virtual Private Networks Essay
Virtual Private Networks
Virtual Private Networks (VPNs) are an easy and cost effective way to connect two or more
networks over the Internet. This is achieved by using encrypted tunnels for security and efficiency.
VPNs use encapsulated and encrypted IP packets and transport them across leased Local Area
Network (LAN) lines.
The benefits of using VPNs are reduced cost overhead, reduced management overhead, and added
security (Microsoft Press, 2000). Least network lines are expensive and VPNs reduce then need for
extra data connections. This in turn also aids in reducing the amount of overhead associated with
managing a network. The added security benefits for a network include encrypted transmission of
network data and ... Show more content on Helpwriting.net ...
Cryptographic authentication is used for remote user authentication. Windows and Unix platforms
can both provide for this function. While payload encryption is used for encrypting the data that is
sent within the packet. An example of data payload encryption is Secure Socket Layer (SSL). SSL
can encrypt data without cryptographic authentication of the remote user.
VPN cryptographic authentication is used to securely validate the identity of a remote user and
determine the level of access and security appropriate for them. It may also be used to authenticate
for the exchange of secret or public payload encryption keys. Shared secret or Private encryption
keys rely on both parties knowing the keys value. Challenge response can be used to ensure that the
hashes of the Private key and not the key itself are transmitted. In addition, one–time password
variations can be employed to ensure that the Private key is changed every time that they are used.
Before data is encapsulated and sent over the Internet, it is encrypted. This is called data payload
encryption. Data payload encryption is used to encode all the contents of an IP packet, both data and
header, to hide any information about the nature of the network and data being transmitted. This will
prevent any snoopers from gathering information about the network that is sending the packet. Data
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Virtual Private Networks Pros And Cons
A VPN is one solution to establishing long–distance and/or open set of connection associations.
VPNs is usually implemented (deployed) by businesses or organizations rather than by persons, but
virtual networks be capable of reaching from within a home network. Compared to other
technologies, VPNs offers several advantages, mainly profits for wireless local area networking. For
an organization looking to supply a protected network communications for its client base, a VPN
offers two major compensations over other technologies: price savings, and system scalability. To
the clients accessing these networks, VPNs also carry a few payback of ease of use. Introduction
VPNs, or Virtual Private Networks, permit users to steadily ... Show more content on
Helpwriting.net ...
 OpenVPN. Using a VPN To use a VPN, each client must have the suitable networking software
or hardware maintain on their local network and computers. When set up appropriately, VPN
solutions are easy to use and sometimes can be made to work involuntarily as part of set–up sign on.
VPN technology also works well with Wi–Fi local area networking. Some organizations use VPNs
to protected wireless connections to their local way in points when functioning within the office.
These solutions give strong security without disturbing routine extremely. Limitations of a VPN
Regardless of their fame, VPNs are not perfect and restrictions live as is true for any technology.
Organizations be supposed to think about issues in the vein of the below while deploying and using
virtual private networks in their operations: 1. VPNs need a complete thoughtful of network safety
issues and alert setting up / configuration to make certain adequate safeguard on a public network
like the Internet. 1. The consistency and presentation of an Internet–based VPN is not below an
organization's straight control. In its place, the result relies on an ISP and their worth of service. 2.
In olden times, VPN products and solutions as of different vendors have not always been well–
suited due to issues with VPN technology standards. Attempting to Mix and match equipment may
perhaps cause technological troubles, and use equipment from one contributor may not provide as
enormous as a
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Vpn Exists For Virtual Private Network
Introduction VPN stands for Virtual Private Network. It provides a private network across the public
network (Internet). This allows the user to transmit and receive data to the private network across
Internet, like it is being directly connected to it. VPN has the characteristics of point–to–point and
private link. To resemble a point–to–point link, the data is sent along with the routing information
necessary to reach the destination through the public network. Data is encrypted and only the users
in the network can access the resources in it, which resembles the characteristics of a private
connection. Data sent through the VPN is very secure, as it cannot be deciphered without the
encrypted keys. In VPN, tunnel is the part of the connection where data is encapsulated and VPN
connection is the part of the connection where the data is encrypted. Figure 1: VPN Connectivity
Overview VPN helps users working remotely to connect to the company infrastructure securely.
Although it establishes the connection across the public network, user is not aware of it as it looks
like data is being sent over a dedicated link. VPN connection is like a Wide Area Network (WAN)
between two areas. VPN is commonly used in the following modes, ● Remote Access across public
network – This allows the users to connect to the private network from anywhere. Using this
solution more employees can telecommute. The client connects to the public network first and
initiates a connection with the VPN
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Using Encryption, Keys, And Virtual Private Networks
A research project that synthesizes your knowledge of encryption, keys, and virtual private
networks. Write a 5–7 page report on your findings.
Encryption
Encryption refers to a technique that facilitate the storage, transmission of information in a format
that is unreadable to unintended audience. Unintended audience in this case may be hackers,
sniffers, malwares e.t.c.the technique has been widely used to curb phishing in the current network
security landscape.
There are two fundamental techniques used in encrypting data: i.e. symmetric encryption (also
referred to as secret key encryption) and asymmetric encryption (also referred to as public key
encryption.)
Symmetric Encryption/Secret Key Encryption.
Symmetric encryption is the earliest and widely popular encryption technique. This technique uses a
secret key which can be a string of words, numbers which are randomly selected to effect
confidentiality. The secret Key is applied on the original message to change the content into a
cipher. The modification of the message to the cipher might be a simple reordering of the message
letter sequence to complex alterations. With the help of the secret key the sender and the recipient
can encrypt and decrypt messages respectively.
Symmetric key encryption therefore uses an identical key to encrypt and decrypt information. Due
to its simplicity it is faster as compared to asymmetric encryption with the length of keys critical to
the encryption security .NIST recommends that the
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A Survey On Virtual Private Network Security And Its...
A SURVEY ON VIRTUAL PRIVATE NETWORK SECURITY AND ITS TECHNOLOGY
Abstract
Virtual personal Network (VPN) may be a communication network that provides secure knowledge
transmission in an unsecured or public network by mistreatment any combination of technologies. A
virtual association is created across the users who are geographically spread and networks over a
shared or public network, just like the internet. even supposing the info is transmitted during a
public network, VPN provides a bearing as if the info is transmitted through personal connection.
This paper provides a survey report on VPN security and its technologies. Keywords: Tunneling;
Protocols; Authentication; Encryption; net Key Exchange.
1. Introduction
A virtual ... Show more content on Helpwriting.net ...
knowledge encapsulation is finished by wrapping the info with a header, that provides routing data.
This method is named as tunneling. to supply confidentiality to the encapsulated knowledge, the
info is secured by encoding. once knowledge reaches a tunnel finish purpose, the encapsulated
knowledge is decrypted and forwarded to its final destination purpose. VPN permits organizations to
attach to their branch offices or to alternative firms over a public network whereas maintaining
secure communications. The VPN association across the web logically operates as a good space
network (WAN) link between the sites. The secure association across the web seems to the user as
{a personal|a personal|a non–public} network communication–despite the actual fact that this
communication happens over a public internetwork– thus the name virtual private network. 2. VPN
Security – an outline
Security is that the most significant and important issue for firms worldwide. Organizations want a
secure and reliable infrastructure for his or her systems to mitigate the chance of malicious activity
from each external and internal sources. Organizations worldwide have major security
considerations specifically knowledge access from the remote web site
Infection by viruses
Intrusion by hackers
Disruption within the storage network
To overcome the higher than mentioned threats and vulnerabilities within the network, VPN
provides varied security measures. The
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Overview of Virtual Private Networks
Virtual Private Networks Virtual private networks (VPNs) were originally associated with remote
connectivity services, such as public telephone networks and Frame Relay PVCs (VPN History).
They evolved into IP based data networking. Early VPNs required extensive expertise to implement,
but today deployment is simple and affordable. VPNs are based around technology that ensures
strong authentication and encryption (Cartwright, 2003). Current VPN market trends are leaning
towards smoothing out the rough edges of IPsec and MPLS, looking forward to additional
applications of them, and ways to integrate them so that networks can communicate even if they
were provisioned differently (VPN Market Trends). The market is focusing on improving gateway
and client management software. There is also an emerging trend to improve security functions in
their offerings and allow integration with other devices. The market trends involve improved service
agreements in handling service problems. The communications industry is shifting toward cluster
computing to tap into sharp increases in computing power, raise industry standards, and achieve
reliability through product architecture (Macwan, 2006). There are two efforts of standardization,
Service Availability Forum (SAF) and Carrier Grade Linux (CGL). Both standards strive to create
standards with appeal to the telecom market in terms of marketplace standardization and the ability
of third party independent software suppliers to produce
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Vpn Services : A Virtual Private Network
Introduction With the rise of business relying on technology as a crucial pillar to their companies,
we find ourselves in a whole new frontier of network security. The days when having a secure office
network meant your servers were behind locked doors is long gone. Everyday companies must
deflect outside attacks from people down the street and across the globe. One of the biggest threats
is man in the middle attacks, where an outside party can intercept vital information being sent from
one device to another before it reaches it's destination. The solution to this problem lies in creating a
Virtual Private Network, or VPN, to protect valuable information sent over a network.
VPN Services A VPN is a private network used to connect a user ... Show more content on
Helpwriting.net ...
IPSec encrypts data and uses hashes to secure data. IPSec can also be used to create a "tunnel"
between the two parties. By creating this "tunnel" you protect all your valuable information by
creating a virtual private line to your destination (Tyson & Crawford).
Penn State VPN Penn State has its own VPN in order to establish a secure connection with the Penn
State network from your home ISP using the VPN client. The client has addresses for network
servers at Penn State that are set up to manage these virtual networks (its.psu). These servers and the
VPN client are what give you access to the internal Penn State servers, which you could not access
without (its.psu.edu). The VPN client contacts these network servers and creates a private
connection that allows you to safely connect and transfer files to and from Penn State (its.psu.edu).
Penn State has many different VPN services that you can access from your home network. Two of
these services are the "ISP to PSU" connection and the the "LIAS–VPN" connection. While both of
these VPN services allow you to connect to the Penn State network from home they work
differently. The "ISP to PSU" connection is a VPN that allows you to connect to the Penn State
campus wireless from your home ISP. This is just a connection into the Penn State network, it does
not change your IP address and it looks like you are still at home. The "LIAS–VPN" works in a
different way. While you still connect from your home ISP, it changes
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Firewall And Virtual Private Network
The current system is an open network system without any kind of security. The computers don't
have anti–malware programs and data is not backed up. Physical security is also weak without
alarms, sprinkler, and cameras. The most secure networks combine hardware, software and physical
security methods together, offering the most protection to all users of any network.
Our plan will include network security, which will protect the network. It will protect the usability,
reliability, integrity, and safety of the network and data. Plan will also include host based security
system. These will include applications to monitor detect, and counterattack against the hosts
networks and systems. There are many types of security methods can be used to secure a network.
Network and host Security components will be,
Anti–virus on each computers
Firewall and Virtual Private Network(VPN) to block unauthorized access to the network and provide
secure remote access
Wi–Fi Protected Access 2 for the wireless security Firewall is a basic and easily implemented
methods of the network security (software based). It will allow authorized access to computer while
blocking unauthorized access by configuring access conditions based on user defined rules, IP. VPN
will be used to encrypt connection across a network while using the internet as transmission
medium. It builds a much secured data connection. VPN connection software encrypts the data
being sent between one places to another.
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Dynamic Multipoint Virtual Private Network
Abstract The paper describes the overview of Dynamic Multipoint Virtual private Network
(DMVPN) which is one of the tunneling technologies. With the advent of new modern era, VPN–
based network are helping the businesses to send and receive sensitive data over public
infrastructure which does add as a security feature. With budget as a concern for organizations, it is
important for Network Engineers to not let go of the set infrastructure but also try to implement new
methods to improvise as well as have backward compatibility. Typical VPN have been used as a
need for connecting remote site–to–site businesses, however, with the ever growing needs it has
become essential to provide a scalable as well as dynamic solution. DMVPN is one of the dynamic
and scalable technologies to achieve scalability and also be dynamically evolving as per the
demand. [2] I. Introduction Internet has grown rapidly over the past few years. MAN and WAN
prove to be expensive due to leasing lines from Service providers. MPLS and Frame Relay have
ruled the Wide Area Network over the years in providing private communication. It was needed for
an intermediate solution which can provide security as well as be private. We can replace MPLS and
Frame Relay with DMVPN as it uses a simple hub and spoke model similar to the one used in frame
relay and also virtually separate different networks while maintaining the same infrastructure similar
to what MPLS does. DMVPN is a Hub and spoke type of network. It is a
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The Virtual Private Network System
Introduction A virtual private network (VPN) is a system that utilizes public telecommunication
infrastructure, such as the Internet, to offer remote offices or single users with safe access to their
institution's network ( Collins, Keeley & Waye,2000). A virtual private network can be compared to
an expensive system of held or rented lines that can only be utilized by a single organization. The
aim of a VPN is to offer the institution with similar capabilities, but at very low costs
(Hulsebosch,Belmont & Manke ,2011). A VPN functions by using the allocated public infrastructure
while retaining confidentiality through safety processes and HYPERLINK
"http://searchenterprisewan.techtarget.com/definition/tunneling"tunneling HYPERLINK
"http://searchnetworking.techtarget.com/definition/protocol"protocols like the Layer Two Tunneling
Protocol (HYPERLINK "http://searchenterprisewan.techtarget.com/definition/Layer–Two–
Tunneling–Protocol"L2TP). In effect, the protocols, by encrypting data at the dispatching end and
decrypting it at the receiving end, send the data via a tunnel that cannot be accessed by data that is
not appropriately encrypted. An added degree of safety involves encrypting both the data and the
originating and receiving system addresses.A VPN (Virtual Private Network) is therefore a means of
generating a safer link to and from a network or computer system. VPNs have been utilized for
years, but they have become stronger in recent years. They are reasonable and
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Application Of Using An Application For A Communication...
Any user using an application in a communication network will expect the quality of the application
to be high without annoying interruptions or delays. In mobile environments due to user mobility,
interference and varying channel conditions lead to a variation of the available network resources
which ultimately affects application quality. An approach named over–the–top (OTT) virtual access
network allows the aggregation of multiple wireless networks into a single IP pipe to provide users
with more bandwidth.
So how do you define bandwidth? "Bandwidth is a measurement of bit–rate of available or
consumed data communication resources expressed in bits per second or multiples of it in computer
networking and computer science" [1] The aim ... Show more content on Helpwriting.net ...
Today's smartphones are equipped with at least two access technologies, e.g. Wi–Fi and Cellular
(3G or 4G LTE). Furthermore, it is possible to use all available technologies for Internet access at
the given time. One of the possible implementation of such a system is an OTT virtual access
network based on UDP tunneling, which has been widely used in Mobile IP or for VPN (Virtual
Private Networks).
In order to minimize the energy consumption at the end device and the usage of the Cellular
spectrum should be used only if necessary [17]. We can aggregate Wi–fi and Cellular link Based on
the detailed information available for a certain application is possible [18], and can be compared in
terms of benefits as well as drawbacks.
The contribution of this paper is in two ways. We define three algorithms in the OTT VAN
architecture which take application type or application quality into account. The objective is to
address the application demands to achieve an effective network. We need evaluate these algorithms
on a scenario basis. We will have to investigate a user watching a YouTube video clip under varying
video quality, while both Cellular and Wi–Fi networks are available. We can evaluate the user aware
quality, Cellular usage, and power consumption of the device using test–bed measurements. Cell
phones get the energy from the batteries which is needed for their operation. Battery limit is
seriously limited because of
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Unit 3 Assignment 1 Vpn Research Paper
A VPN is a secure protected network called a tunnel for communication purposes over long
distances using the Internet as its means of transport. Due to the nature of the communication or
transmissions that are being utilized by say a larger corporation, secure and reliable communication
is a must. In the beginning these VPN connections were established using one or more dial up
modems for users to access the information. Authentication was established by requiring the correct
user name and password. As time went on as always things changed, new technology and advances
in communication as well as equipment allowed the VPN to evolve and expand. To ensure security,
the virtual tunnel is encrypted. VPNs use several protocols in order to encrypt ... Show more content
on Helpwriting.net ...
I believe that the VPN and its respective protocols is a very important step towards securing the
Internet and all the data that travels over it every second of every day. In the future I think that there
will be yet a faster, even more secure and reliable private connection, only 15 years ago or so the
VPN was primarily a land line based technology, using common twisted pair for connection over a
modem and going through a tel–co switch. In only 15 years we have progressed to optical networks,
wireless networks, VPN networks of varying flavors. VPNs sound secure, and in theory they are,
however, as with all technology and advances made towards protecting our data from unauthorized
access by anyone who is not the intended recipient, is inevitable. Just recently the VPN protocol was
breached, a way around the protocols and encryption was discovered and exploited. The hackers
were able to circumvent two of the most trusted privacy tools on the Internet: virtual private
networks, or VPNs, and Tor, the anonymity software that masks a computer's true whereabouts by
routing its Internet connection through various points around the globe, according to findings by
Jaime Blasco, a security researcher at AlienVault, a Silicon Valley
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Virtual Private Network ( Vpn )
What is a Virtual Private Network?
A virtual private network (VPN) is an addition of a private network that bridges the connection
between a shared or public network. It allows you to send data between two computers in a point to
point private link (Microsoft, Virtual Private Networking: An Overview). VPN allows individuals
and companies to connect two locations securely and remotely. For example, if one company branch
is in Secaucus, NJ and the other is in Newark, NJ; they can securely access the central resources and
communicate with each other.
Types of VPN?
The common uses of a Virtual Private Network are: Remote Access over the Internet, Connecting
Networks over the Internet, and Connecting Computers over Intranet. Remote access or PPTP VPN
is the most commonly used VPN protocol. It enables the user to connect to the VPN network using a
password login. They don't require extra resources such as expensive hardware and are usually
available in an inexpensive software.
Site to Site VPN allows different sites of the same organization to have their own network to
connect together and form a VPN. It can be hardware or software based.
Layer to Tunneling Protocol (L2TP) is similar to PPTP as not only it provides data confidentially
but also data integrity. L2PT was invented by Cisco and Microsoft (Personalized). Image below
drawn by Cisco.
Layer 2 Protocol tunneling allows data units to be tunneled through a network. Edge Switch is
connected to the client switch
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Virtual Private Network ( Vpn ) Service And Steps
This paper will cover Virtual Private Network (VPN) service and steps that should be taken prior to
setup. Emphasis will be on network and operating system for the VPN services. It will look at the
types of connections a small business might expect to encounter when using VPN 's. The security
concerns of choices in the set up of the connections for both parties including: type of encryption
available and Firewall issues. Last of all what are the overall security concerns when using a VPN
including problems with a discussion of fixes and security patches. Security Concerns and the Use
of VPN for Small Businesses Small businesses often operate on a tight budget; recently VPN 's have
become a very cost effective way for them to connect ... Show more content on Helpwriting.net ...
Before installing the VPN services, however, a number of things must be taken into consideration.
By evaluating who is using the VPN, the hardware necessary to make good connections, the pros
and cons of differing connection protocols, and evaluating past security problems, setting up the
VPN services becomes a much smoother process. VPN 's and Firewalls Anyone who will be
accessing the VPN services should have a firewall in place.Once a VPN connection is established,
the client is essentially able to access information behind the company 's firewall, thus creating an
access hole. Therefore, insisting a client use and maintain a firewall is another layer in the security
of the VPN setup. The ease of changing the firewall rules to allow VPN connections should be
addressed. Very old firewalls, either appliance types or software types, may be difficult or
impossible to configure to allow VPN access.A small business may stay with an old firewall for
many reasons, one of which might be the fact that there has been no reason to upgrade in the past. It
would be prudent to check the firewall documentation before becoming enmeshed in the VPN
process, only to have it fail for lack of access, or creating a setup that might be considered insecure.
User Considerations When setting up the VPN server(s) at the main office, who is using the
connection and how much access to the internal network,
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Virtual Private Networks
Virtual Private Networks
Abstract
With the increasing popularity of the Internet, new technologies have introduced to provide secure
access to the resources from remote clients. Virtual Private Networks are becoming the most
universal method for remote access. They enable service provider to take advantage of the power of
Internet by providing a private tunnel through the public cloud to realize cost savings and
productivity enhancements from remote access applications. VPNs securely convey information
across the Internet connection to remote users, branch offices and business partners into an extended
corporate network. This paper is an attempt to provide an overview of VPN and its services and how
the ... Show more content on Helpwriting.net ...
These devices do not have direct connectivity to the service provider network. C devices are not
aware of the VPN.
Customer Edge devices (CE) – These devices are located at the edge of the network and connect to
the provider network.
Service provider network devices also fall into two categories –
Service Provider devices (P) – P devices are devices such as routers and switches within the
provider network that do not directly connect to customer networks. P devices are unaware of
customer VPNs.
Service Provider Edge devices (PE) – These devices connect directly to the customer networks via
CE devices.
2.2 VPN Gateways – A VPN Gateway handles the high speed encryption and decryption methods,
provides tunneling services for passing data and generally makes sure that a VPN connection is
established. Gateway can be software, or built on a firewall, or a router or server, or a security
appliance.
2.3 Keys – Keys are used for the encryption and decryption of data. Sites can choose to maintain
their own database of digital certificates (keys) for users by setting up a certificate server, or they
can use an external certificate authority.
2.4 Network – There must be an internet infrastructure at both ends to provide the actual
transmission medium. Some of these components may be built on a single device or spread over
many devices over several sites.
3. GOALS OF VPN
The service goal of VPNs is
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Virtual Private Network ( Vpn ) Connections Essay

  • 1. Virtual Private Network ( Vpn ) Connections Essay Virtual Private Network (VPN) connections are important securities connections for companies. These connections enable corporations to keep and maintain good relationship with partners, employees and contractors. A VPN is a virtual version of a secure, physical network. It is connected to the outside world trough internet. It helps to protect corporate data and public critical information. Supermarket and Airline companies use VPNs to enable their employees, contractors and partners to get access to data from the central office no matter their location. The hardware VPN is a virtual private network based on a single, stand–alone device which provides remote offices or individual users with secure access to their organization's network by using the shared public telecommunications infrastructure and standard security measures. Barracuda SSL VPN appears to be the one that can fulfill these requirements. In this essay I am going to present VPN connections, advantages and disadvantages of the Barracuda SSL VPN, security provided by the Barracuda SSL VPN hardware, and his features. Virtual Private Network is a way to communicate securely with a company or corporate servers from long distance at public network. It is an important source of transmitting important data across the web. VPN technologies implement restricted–access networks that utilize the same cabling and routers as a public network, and they do so without sacrificing features of basic security. A VPN ... Get more on HelpWriting.net ...
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  • 5. Virtual Private System : It Uses Public Network Essay VPN VPN are extremely regular utilized technique nowadays as a part of companies where they need to keep communicate with their unreachable branches at some point in other piece of globe. It permits authorization to get to companies Intranet in a protected and effective way. Virtual private system: it uses public network to localise remote user or sites together. It uses internet to connect two networks with each other. The VPN uses "virtual" connections routed via the Internet from the business 's private network to the remote site or employee. By utilizing a VPN,company ensures security – anybody capturing the encoded information can 't read it. Why VPN's are essential? VPNs give an essential support of organizations, governments, military associations, and even people. VPNs give secure access to your local area network. Without VPNs, getting to delicate data remotely would not be conceivable. VPNs permit two or more systems to communicate with each other. For instance, a branch office of a bank situated in Papatoetoe and its home office situated in Auckland associate with each other through the Web safely to share their assets, (for example, bank statements, bank explanations, contract records, and so on.) together. With a VPN, both areas can communicate together as one utilising the web safely. Classification of VPN:– VPN are classified into two types:– site–to–Site VPN Remote access VPN Site–to–site VPN A site–to–site VPN permits two or more systems to be ... Get more on HelpWriting.net ...
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  • 9. Virtual Private Networks Commonly Called As Vpn 1. Overview: Virtual private networks commonly called as VPN. It carries request among the customers, servers and computers to deliver protective support to the customers. These VPN's helps the users to connect from the senders to the receiver with a secure connection. It is one of the easiest and safest methods to link to any remote network. The term is derived from the blend of virtual private networks that separates the congregation of nodes and similarly VM models which protects the resources to host functioning frameworks. VPN connects establishes link from one end to the other end of the customers systems remotely from distant locations. This was a new innovative means of connecting Local Area Network (LAN) as well as to Wireless Local Area Network (WLAN). It safeguards the data of the customers using different protocol connections. Mostly, the data is encrypted after transmission and also after obtaining at the receivers end. A means of security layer is used during the encryption, and in obtaining the system addresses at starting. Apart from the other leased connections, VPN offers a lease less establishment throughout the universe. This was the one of the advantages of VPN; moreover it provides data security to the systems during encryption, offers flexibility to the organizations that works for distant locations and similarly to users of the internet. It saves most of the time, budget and energy of the employees who works remotely. Since the leased lines are ... Get more on HelpWriting.net ...
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  • 13. Using A Virtual Private Network VPNs By Samantha Fitzpatrick Prepared for Dr. Ford 30 April 2015 Introduction There is a growing need to connect to internal networks from locations other than the regular and secure office. Employers and organizations need to realize that employees often need to connect to internal private networks from home, hotels, airports, etc. A solution for this problem is using a virtual private network (VPN), which is a network that uses public network paths, but maintains the security and protection of private networks. Secure communication is expensive, but VPNs allow organizations to have a number of discrete communication services for a large amount of clients. It is cheaper to have a copious amount of virtual networks on a couple physical devices than having a copious amount of physically discrete devices accomplishing the same objective. Methodology VPNs transmit data through secure tunneling. A packet is first encapsulated in a new packet with a new header and then sent through the tunnel, which is normally IPSec, L2TP, PPTP, or SSL. Both points of the tunnel need to support the protocol used. To provide access to the internet, the packet with a private IP address can be sent inside of a packet with a global IP address. For security, VPNs use encryption to make sure packets are indecipherable without the proper keys, which provides data confidentiality. They also provide data integrity using a message digest to ensure the information has not been tampered with ... Get more on HelpWriting.net ...
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  • 17. Using Virtual Private Networks ( Tyson ) The world today is connected nearly in every way. The Internet has revolutionized and has become one of the most powerful tools that any business can have in today's world. If you wish to have a successful and lucrative business you need to be connected to the internet in some way. Companies in today's age are so big that they not only just have one office many of them have a headquarters and then they might have regional offices and or subsidiaries. Staying connected to all these different offices is essential. And although the internet provides a way for companies how to do that. If they do not secure there internet connection they might be hacked sensitive information pertaining to the business might be seen by competitors or unwanted ... Show more content on Helpwriting.net ... Imagine space being the internet and a public spacecraft being the way to travel between planets. Consider the spacecraft's as webservers. Now traveling in these spacecraft is unsafe anything can happen everybody can see what you're doing and so on. Now if you are a company and you want to travel to another planet (another office) and have sensitive information then how could you travel though Space (internet) in secure manner? The only way would be if you own your own spacecraft to travel through space. Your own spacecraft would be consider your VPN. Some of the benefits that a good VPN should have are: security, scalability, reliability. Intruders trying to computer the data traveling through the VPN tunnel should fail. A VPN should be able to grow adapt if the business grows or gets smaller and should be able to handle these changes without having to replace the VPN totally. The VPN should not go down randomly and users should be able to get on the VPN at any time without hassle each user should have the same connection quality even if the VPN has reached the maximum of users. Extend their network across multiple geographic connections at lower cost. Can save commuting cost for certain employees if working from home. Now all VPN are not created the same. There are not set guidelines to set up a VPN there is no right or wrong way it usually mostly depends on what the VPN is being used for and on the administrator preferences. The most common and ... Get more on HelpWriting.net ...
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  • 21. Virtual Private Network ( Vpn ) What is VPN? A Virtual Private Network (VPN) is a network constructed by using a local public network to connect to a private network. The invention of VPN and the main approach behind this has changed the world over the last decades. This network was initially created by many big companies and other organizations, but it wasn't created for the end users. The main motive behind this technology was that the different companies wanted their network to be secure and private and also they also wanted their network to be accessed by their other offices at the different locations because only this network can hold the secrets and the important information about the particular company. Now, what makes Virtual Private Network (VPN)? There are ... Show more content on Helpwriting.net ... In an extranet, the VPN connections are between company to their partners or the customer. A well– constructed VPN can benefit to the company such as that it can extend their geographical network. Secondly it could be cheaper in terms of the operational cost in comparison to the WAN's (Wide Area Network). It also reduces travelling costs for the employees as they can access the company's network remotely. The use of well–constructed VPN can improve network topology and it can also provide overseas networking opportunities. The use of a good VPN can provide quick Return on Investment (ROI) in comparison to the WAN (Wide area Network). A well–constructed VPN has different ways to keep the data of a particular company secured and private. First one is Data Confidentiality, in this method VPN provides the most imperative service. As the private data of the company travels through a public network, here data confidentiality is important and it can only be obtained by the proper encryption of the data. This is the procedure of taking all data that from one computer and sending to another. It should be also encoded in such a manner that only the other computer can decode it. Mostly every secure VPN's includes one of these protocols to distribute the encryption. The protocols that VPN uses are Internet Protocol Security (IPsec), PPTP (Point to Point ... Get more on HelpWriting.net ...
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  • 25. Virtual Network : Virtual Private Network VIRTUAL PRIVATE NETWORK Introduction Along with the rapid development of internet, there is an increasing demand to connect to internal networks from remote sites. When employees work from home or go on business trips, they want to connect to the internal private networks of their companies over a secure connection. The demand of secure connection to internal network led to the technology of virtual private network A VPN is a private network technology that provides a way of protecting information that being transmitted over a public infrastructure (usually the Internet). As the name suggest, VPN uses "virtual "connections to connect remote site or remote employee to business 's private network. Users could build a virtual private tunnel to enter an secure internal network and to access resources and information. In this paper, I will discuss the definition of VPN, the types of VPN, how does VPN work by using different protocols, and what are some potential security risks and considerations that need to be taken into account when implementing a VPN. I.What is VPN? Virtual Private Networks (VPN) are point–to–point connections across a private or public network such as the Internet. In a VPN, private two or more devices are communicated through a public network such as the Internet. Therefore, the communication is virtually but not physically there. The communication is also private because even though the devices are communicate over public network(internet), the ... Get more on HelpWriting.net ...
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  • 29. A Interview On Virtual Private Network Assignment 1 Unit: BN305 Virtual Private Networks Student name: Gjorgji Babarovski Student ID: MIT 140626 Teacher name: Paul Carnie "VPN, or virtual private network, is a network that is constructed by using public wires – usually the Internet – to connect to a private network, such as a company 's internal network. There are a number of systems that enable you to create networks using the Internet as the medium for transporting data. These systems use encryption and other security mechanisms to ensure that only authorized users can access the network and that the data cannot be intercepted. "– Vangie Beal, 2015 [8] Part I 1) On figure 1 obviously we can see Site–to– Site network diagram with 3 Ethernets and they are all ... Show more content on Helpwriting.net ... [1] 2) Internet Protocol Security (IPSec) is a protocol suite to make Internet protocol more secure by authenticating and encrypting every IP packet of one communication session. Beside from the changes that we have done for the first task, we need to implement IPSec in the tunnel, so figure 1 would be able to run GRE over IPSec. IPSec involves many component technologies and encryption methods, also IPSEC uses to main protocols to create security frame work: Authentication header and Encapsulating security payload. Authentication header does not provide encryption, that's mean only authenticates the sender of the data. If we use authentication header alone, it can provide week protection and also it can show some problems if the environment uses NAT. While encapsulating security payload provides the same security services as authentication header, except the only difference is ESP can encrypt the payload. IPSec technology is competently invisible in its operation because it is based in network level. Another thing is the end users are not even directly interacting and are not required to learn about IPSec encryption. [2] The advantage to monitor all traffic that going through the network is because IPSec is based in network level. Also IPsec is not application dependent, so we do not need to worry about application compatibility issues. Also there is some disadvantages, the role to encrypt and ... Get more on HelpWriting.net ...
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  • 33. Study And Implementation Of Virtual Private Network Essay Study and implementation of Virtual Private Network (VPN) in Windows Server Network. Abstract In this project I will pursue my knowledge about VPN and I will show how it works and how it will provide the security to the users. In this project I will establish a secure network using VPN which will provide users the proper and the faster access. The users will be able to use the network from any place with the specific username and password provided to every user. Users will stay connected with their Head offices and any other regional offices according to their need. It will work like a tunnel as the network will be connected point to point. No one will be able to use the network without username and password. I will make this project on VMware player with Microsoft Windows Server 2008 r2. I will design a network with two clients and a server which will be able to control the access of the users and will be a secure network so that no one can access it without the permission of the Administrator. Weekly Plan Week Job Performed Week 1 Project Proposal Week 2 Going through the concept of VPN Week 3 Referring the concepts of VPN Week 4 Understanding the working of VPN Week 5 Installing the VPN and allow the Administrator to put security for clients. Week 6 Development and Implementation Week 7 Testing Week 8 Compile all the ... Get more on HelpWriting.net ...
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  • 37. An Open Public Network / Environment Essay Introduction Virtual is something that is not real, but can be produced by computer imaging. So when you have a VPN, it is considered to be private interaction with two or more devices. The way that these two or more devices can communicate with one another is through the use of the Internet wish is a public network and not private. So the communication that takes place between two or more devices is virtual but not physical form. Private the meaning of is to keep something hidden like a secret from others, or in this case from the public. Although two or more devices are able to communicate with one another on an open public network/environment, there will be no third party who can disturb this communication. Since a third party in unable to disrupt there communication it is also unable to receive the information that is being exchanged between the two communicators. A network is terminal nodes and links that make it possible for two computes or other devices electronically pass data to each other along data connections. These computers and devices are able to communicate with one another via cables and wires, so in turn a VPN is a network. It also has the ability to transmit data long distances very productively and smoothly with no problem. VPN has been associated with remote connectivity services in the past such as the (PSTN), Public Switched Telephone Network. This network is starting to be coupled with IP networks. In the past IP network enterprises had broadband ... Get more on HelpWriting.net ...
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  • 41. Tutorial Video : The Virtual Private Network Tutorial Video Virtual Private Network Tutorial Video Overview The Virtual Private Network (VPN) Tutorial Video was a project that I was tasked with as part of my ICT Student Technologies internship responsibilities. With this project, I was able to employ concepts and tools learned in multiple former classes to compose a video that effectively appealed to a specific audience, yet contained appropriate rhetorical elements to suit many other potential audiences. Additionally, this project employed multiple rhetorically influential aspects as a means to promote logical and emotional connections. To promote this synthesis, I scripted, recorded, edited, and published (in part with my fellow intern) this video with foundational rhetoric in mind. By composing ... Show more content on Helpwriting.net ... Yet, despite the existence of this tutorial, both my supervisor and myself had concerns about how usable this textual document may be for older audience members, leading to my suggestion of composing a more thorough video tutorial. This idea was enthusiastically accepted and thus the Virtual Private Network (VPN) Tutorial Video project was born. Knowing that the open enrollment period has swiftly approaching, I was asked to work on this video in conjunction with my fellow intern. We completed this project in under a week, including scripting, recording, editing, proofing, publishing, and posting to the KnowledgeBase along with the textual tutorial. Scripting and recording were primarily my responsibility, as was posting to the KnowledgeBase. I undertook some editing and publishing responsibility, but the majority of those elements were performed by my colleague. Audience As mentioned above, this project was originally conceived to suit an older, less technologically savvy audience trying to download a software product. With this in mind, I made sure to pay special attention to the language used in the script as well as the audio and video recording. The script was heavily scrutinized by myself and my peers to ensure that no misinformation was accidently portrayed. Moreover, I emphasized approachable and understandable language; the VPN download process is a bit complicated so I wanted to facilitate easier access with the tutorial that did not ... Get more on HelpWriting.net ...
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  • 45. Vpn VPN Introduction: VPN stands for Virtual Private Network. VPN is a data network connection that makes use of the public telecommunication infrastructure but maintains privacy through the use of a tunneling protocol and security procedures. It operates much like a Wide Area Network (WAN). Most companies actually leased lines, but in either case both solutions are very expensive. As the Internet became more widely available people started creating VPN solutions that took advantage of the cheap network access. The idea was to use the Internet 's existing links to create a virtual circuit. Advantages and Disadvantages of VPN: Virtual Private Network presents some advantages over the traditional network technologies. VPN ... Show more content on Helpwriting.net ... Extranet: Extranet VPNs between a company and its strategic partners, customers and suppliers require an open, standards–based solution to ensure interoperability with the various solutions that the business partners might implement. The accepted standard for Internet–based VPN is the Internet Protocol Security (IPSec) standard. Equally important is traffic control to eliminate bottlenecks at network access points and guarantee swift delivery of and rapid response times for critical data. (A) VPN Protocols: One of the most popular protocols for VPN is PPTP, which stands for Point–to– Point Tunneling Protocol. PPTP is actually an extension to PPP (Point–to–Point Protocol) which is a standard for a traditional dial– up networking. What PPTP does is packaging data within PPP packets, and then encapsulates PPP packets within IP packets, that is called datagrams, so they can be ready for transmission through an Internet–based VPN tunnel. PPTP supports authentication, encryption and packet filtering. The second popular protocol for VPN is IPSec, which stands for Internet Protocol Security. One of IPSec features is that it includes an integrity check that ensures that no packets are deleted, added or tampered with during transmission. The other feature is that IPSec uses machine level certificates which authenticate ... Get more on HelpWriting.net ...
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  • 49. Lan Virtual Networks There are two main types of virtual networks. These networks include virtual private networks and virtual local area networks. Their acronyms are VPN for virtual private network and VLAN for virtual local area network. Both of these virtual networks have specific uses and functions. VPNs and VLANs differ in several ways because of the way they are used. To begin with, a virtual private network is a tunnel between two systems, a remote network or a device and a private network elsewhere. This tunnel is encrypted and uses the Internet. A virtual local area network is simply a LAN that is virtual. It is mainly used to mitigate broadcast traffic since it splits up the broadcast domain into pieces. It is split using switches and connected to other ... Get more on HelpWriting.net ...
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  • 53. Virtual Private Network : Setup And Cracking VIRTUAL PRIVATE NETWORK SETUP AND CRACKING Matthew Canario, Sami Alghamdi, Ihab Nazir and Moath Al–Anbar University of Ontario, Institute of Technology Oshawa, Ontario Abstract– A VPN can be defined as the private network in which a public infrastructure such as internet is used for connecting the remote users or sites. As suggested by the name, virtual connections are used in the VPN and they are routed via the Internet from the private network of the business to the remote employee or site. VPN is a latest technology that may be applied to both LAN & WLAN. In the VPN, privacy of data is maintained by using some procedures of the as well as protocols of tunneling. This will result in the encryption of the data at the sender's side which is further forwarded through the tunnel and decryption is performed at receiver's side. This paper represents the way in which a VPN is set up and configured with weak parameters & how it may be broken. It also includes various authentication techniques. Keywords–Virtual Private Network; Authentication; Encryption; Keys; 1. INTRODUCTION A VPN stands for Virtual Private Network. It is a communication network in which any combination of technologies is used for securing the connection which is tunneled via an otherwise entrusted network or unsecured network. In the VPN, a dedicated connection for example leased line is not used, rather, a virtual connection is created between geographically isolated users & the ... Get more on HelpWriting.net ...
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  • 57. A Report On Virtual Private Network Essay Statement of problem: The primary aim of this project is to keep VPN safe which also means keeping our information and credentials safe.As of now the working principle and the protocols related to VPN i.e Virtual private network is understood.VPN is considered to be invisible and impenetrable by most of its users and the organizations providing this service till date but the research carried on by NTA monitor Ltd. shows that these VPN 's are the weakest point in their perimeter.VPN 's are the most attractive targets for the hackers. There are many flaws in VPN services which can give a hacker, a lot of information about the users of VPN.Virtual Private Networks carries themuch sensitive information over an insecure network. Most of the users believe VPN 's keep their information secure that is what VPN 's are there in market but its is shocking that VPN 's also have remote exploitable vulnerabilities through which one can gain an unauthorized access to the Network or can alter the traffic in the Network etc. One such problem which is there in Virtual Private Networks is USER NAME ENUMERATION VULNERABILITIES.Most VPN use IKE i.e Internet key exchange aggressive mode with an authentication method. The authentication method used in this case is PSK i.e Pre Secured Key authentication. PSK authentication method is a well known authentication scheme but sometimes terminology may differ for e.g username may be interchanged with ID or Groupname and password may interchange with ... Get more on HelpWriting.net ...
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  • 61. Network Virtualization, Data Centres And Performance Of... 1. Introduction 1.1. Project Background This section will explain the background of network virtualization, data centres and performance of internal network I/O. The paper compares and analyses, the similarities and differences of software based switch and physical switch. We also try to compares the switching methods used by the two switches. Network Virtualization Network virtualization can be explained as a network environment in which multiple virtual networks coexist in the same physical device. A virtual network is a collection of network enabled virtual devices and virtual links. Network virtualisation segregate the existing Internet Service Providers (ISPs) into two separate entities. Infrastructure Providers (InPs); ... Show more content on Helpwriting.net ... Since VLANS are secluded entities they provide high level trust and security, as well as time and cost effective network management (IEEE, 2011) (Chowdhury & Boutaba, 2010). VPN is a dedicated communication between multiple geographically separated sites. VPNs belong to a family of overlay networks that use IP tunnels to form a virtual network on top of the Internet. These tunnels use cryptographic techniques to provide robust security and privacy. To a remote user, VPN provides all the benefits of a private network, while corporations benefit from the low operational costs, high security, and instant global coverage offered by it. Virtual private networks have gained immense popularity among commercial and defence organizations because of their capability to provide secure connectivity at lower costs. The Internet is considered the cornerstone of connectivity for organizations to expand their operations and increase revenues. As organisations grow, different methods must be employed to provide secure and efficient connectivity among geographically distributed branch offices, strategic partners, and mobile/telecommuting employees. Although several technologies exist, most recently Internet–based virtual private net– works (VPNs) have evolved as the most secure and cost–effective means of ... Get more on HelpWriting.net ...
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  • 65. Virtual Network : Virtual Private Network Essay Today, the technology VPN (Virtual Private Network) has established strong recognition among IT people and every administrator is committed to organize VPN–channels for employees working outside the office. Virtual Private Network is an association of individual machines, or virtual LAN network, which ensures the integrity and security of data transmitting. It has the properties of a dedicated private network and allows data transfer between two computers via an intermediate network such as Internet. VPN has a number of economic advantages over other methods of remote access. Firstly, users can access the corporate network, without installing with its switched connection, thus eliminating the need to use modems. Secondly, there is no need for the leased line, which helps to reduce a cost. The main reason that companies use secure VPN, is that they want to send "sensitive" and / or confidential information over the Internet, without fear that someone will be able to intercept and read the transmitted data. Providers implementing technology trusted VPN, interested in transferring data at a pre–specified routes through a network of one or more trusted providers. Differences between trusted and secure VPN stand at the stage of defining requirements to the network. Secure VPN guarantee the confidentiality of information transmitted, but not responsible for the transmission routes. Trusted VPN provides the necessary routing and delivery time, maintaining the required level of ... Get more on HelpWriting.net ...
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  • 69. Setting Up Sophos: Site-to-Site Access VPN Computer Technology Department – College of Computer Studies De La Salle University Network Security and Administration (SECADMN) 3.1 Virtual Private Network (Site to Site) Laboratory Report Group 1 Mechanics Fadrilan, Paul Jovie R. Data Presentation Magat, Rodolfo M. Analysis Conclusion References Submission Time Introduction In a business or an organization, communication is very important especially for long distance or remote places. When a business or an organization grows and needs to have branches to extend their reaches, they have to be connected to these branches in order to keep their business going. Their connection may ... Show more content on Helpwriting.net ... 6. Configuration of Firewall Functionalities/Services and Rules (methodology) – process done via web GUI and configurations implemented on DHCP Settings, IP Masquerading, Firewall Settings and DNS Settings. These configurations would allow a certain host to connect to the internet even without a router or modem. Results: Figure 1–1. Created a new DHCP Server
  • 70. This service is not one of the essential purposes of the firewall yet it is a good feature of the firewall to also implement this service for the administrator not to maintain another server. Figure 1–2. Created a new Masquerading Rule For this masquerading feature, the firewall allows other workstations to have an internet access without using NAT. In this configuration we tried to use different rules in order to implement this function but only one on the figure allowed the internet access. Figure 1–3. Created new Firewall Rules There were 2 rules applied in order to allow web access. The 1st rule applied is used to allow any http request from the internal network to any network outside. By implementing this rule other requests different from the latter will be denied since the firewalls have a default "deny all" at the end of its firewall rule list. This is the reason why google.com cannot be accessed because it runs on a https ... Get more on HelpWriting.net ...
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  • 74. Virtual Network : Virtual Private Network California State University, Los Angeles Department of Electrical and Computer Engineering Virtual Private Network Guided by: Dr. Charles Liu Submitted By: Harsha Bhoomesh (CIN–303208495) Department: Electrical Engineering Virtual Private Network 2 Contents:  Abstract 3  Virtual Private Network  Introduction 4  VPN Topology 6  Types of VPNs 7  Components of VPNs  Introduction to GNS3 10  Work of Mine  Network Topology 15  Configuration 17  Various Scenarios 21  Conclusion 24  References 24 Virtual Private Network 3 ABSTRACT: Network security is a serious matter. A network allows you to share information and resources, but it also lets computer viruses, human intruders, or even disgruntled employees do far more damage than they could on a single machine. To overcome this drawback we will use Virtual Private Network. A VPN is a supplement of an enterprise's private Internet across a public network such as the Internet, creating a secure private connection, essentially through a private tunnel. VPNs securely convey information across the Internet connecting remote users, branch offices, and business partners into an extended corporate network. This Research paper will illustrate how server communication is achieved by achieving the
  • 75. principles of security like Authenticating and encryption (L2TP) i.e. using ESP, AH, PPTP & IPSec in between Site–to–Site (two or more customer sites (LANs) are connected through the service provider) using GNS3 displaying the use of ... Get more on HelpWriting.net ...
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  • 79. The Concept Of Virtual Private Network Executive Summary The report focuses on the concept of virtual private network. Virtual private network enables remote connections without the need of cables or leased wires. It leverages the capability of public network(i.e. the internet) to provide remote connections between different sites globally. Further, the report introduces the scope and objectives of Design Sheet metal private limited, the organisation which is trying to expand its operations throughout the Australian continent. The report proposes the implementation of virtual private network technology through CISCO AnyConnect Secure Mobility. There is a coherent relationship identified between the objectives of Design Sheet Metal and the benefits realised by VPN ... Show more content on Helpwriting.net ... Technically, VPN extends the concept of Local area network, where the main LAN at the company headquarters is connected to multiple LANs in different company locations and individual users (Protocols, 2008). Most organizations develop an intranet, which is an internal network used only by company employees. It allowed all the employees to have one single access point for company resources and updates. Implementing a VPN allowed remote users to access the intranet from any location or even their homes (Tyson & Crawford, 2015). Design Sheet Metal Design Sheet Metal Pty Ltd is a manufacturing and packaging company which provides leading supply of flashings and rainwater products. Established in 2003, the company has the reputation for providing quality products and has one of the fastest turnaround times i.e. less than 24 hours. Currently, it is looking to expand to all parts of Australia beyond the current locations, namely, Bendigo, Ballarat, Mornington and Bellarine Peninsula, Geelong and Melbourne CBD. They provide delivery to 70 – 80 sites on a daily basis and would like to keep up the same level of service in different Australian states. The office Head Quarters will be based in Melbourne with the officials travelling to the different sites on occasions for recording, monitoring and evaluating the ongoing progress for expansion (Metal, 2015). This expansion has led to ... Get more on HelpWriting.net ...
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  • 83. Virtual Private Network ( Vpn ) Introduction – The Past: Thirty years ago, there was no such need of privacy and data encryption as the Internet age had not taken off. In the 90s, VPN technology was still a fairly new technology but was predicted that it would be the next big thing in the early 2000s. Only large companies could afford the price to use dedicated lines to connect to remote locations. However, the disadvantages of the lease line are quite clear: Although large companies have the capitals and needs for building private networks, small and medium companies could rely on the less expensive, packet switched X.25 network. As the size of the Internet continued to grow, both small and large companies began to connect their private network with the public network. This brings a convenience but with one obvious problem – privacy and security. Virtual private network (VPN) was developed in 19XX by Stan Hanks, who build IP VPN based on TCP/IP–over–X.25 stack for CSNET. Its goal was to ensure privacies and data integrities of communication and information. Thanks to the helps of many engineers and people such as XXX decided not to patent the XXXX technology when he was in Microsoft, VPN technology was growing rapidly during the early 2000s. Over the year, its flexibilities make travelled businessmen able to connect back to their companies' networks, it also made employees work from home possible. Although some may argue that this makes the line between home and work space less clear, others claim that it ... Get more on HelpWriting.net ...
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  • 87. A Virtual Private Network ( Vpn ) Introduction A virtual private network (VPN) is a private network that extends across a public network, same as the Internet. It allow user to send and receive data across networks that can be either shared or public as if it's their own device were connected on private network. Application running across VPN have functionality, security, management of the Private network. VPN allow employees to securely access a corporate intranet while located outside the office site. They are used for geographically separated office of an org. to connect as one network. Individual user can use wireless transaction with VPN, to circumvent geo–restriction and censorship, or to connect to proxy servers for the purpose of protecting personal identity and ... Show more content on Helpwriting.net ... To prevent any kind of disclosure of private information, VPNs allow only authenticated remote access using tunneling protocols and encryption techniques. The VPN security model provides these measures: Confidentiality: if the network traffic is sniffed at the packet level (see network sniffer and Deep packet inspection), an attacker would only see encrypted data. Sender authentication to prevent unauthorized users from accessing the VPN. Message integrity to detect any instances of tampering with transmitted messages. Authentication Tunnel endpoint are authenticated before secure VPN tunnels are created. User created remote VPN. May use passwords biometrics two factor authentication or other cryptographic method. N–N tunnel often use passwords or digital certificate for security. Keys are permanently stored to allow establish automatically without admin know. Routing Tunneling protocols can operate in point to point network topology which theoretically is not vpn, because vpn are to support arbitrary and changing sets of ... Get more on HelpWriting.net ...
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  • 91. IPsec and VPN IPSec Internet Protocol Security (IPsec) is a set of protocol for establishment of securing Internet Protocol (IP) communications. Safety on data was established through process of authentication and encryption of each IP packet in every communication session. At the beginning of the session, mutual authentication between agents will established and cryptographic keys to be used will arbitrated during the session. IPsec can be applied in protecting data flows not only between pair of hosts and pair of security gateway but also for between a security gateway and a host. IPsec provided end–to–end security in the Internet Layer of the Internet Protocol Suite. It is different to other Internet security systems which is being use all ... Show more content on Helpwriting.net ... VPNs can be either remote–access or site–to–site. In a corporate setting, remote–access VPNs allow employees to access their company 's intranet from home or while traveling away from the office, and site–to–site VPNs allow staff member in geographically disparate offices to share one cohesive virtual network. A VPN also be used to interconnect two similar networks over a dissimilar middle network. VPN systems may be classified by the protocols used to tunnel the traffic, the tunnel 's termination point location, whether they offer site–to–site or remote–access connectivity, the levels of security served or the OSI layer they present to the connecting network. Therefore, in order to prevent exposure of confidential information, VPNs generally allow only verified remote access and make use of encryption techniques. VPNs provide security by the use of tunneling protocols and through security procedures such as encryption. The VPN security model give confidentiality such that even if the network traffic is sniffed at the packet, an attacker would only see encrypted data, sender authentication to prevent unauthorized users from accessing the VPN and message integrity to detect any occurence of manipulating with transmitted messages Secure VPN protocols include the following; Internet Protocol Security ... Get more on HelpWriting.net ...
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  • 95. Using A Virtual Private Network ( Vpn ) Section 1.0 The world is constantly changing especially in technology. Each day new software and hardware is created to accomplish tasks that were not possible before. These new software's and hardware's offers new problems to come with these new accomplishments. Businesses are constantly looking for ways to make their employees more efficient. Allowing employees to communicate not just in the office, but remotely is being a requirement at this day and time. This company could make use of a Virtual Private Network (VPN) that routes through the firewall. The VPN would allow easy access to the company network for authorized employees. A VPN would allow the company to have employees that telecommute, work from home, or remote employees. It would allow our employees that travel frequently – like salesmen – to connect from anywhere they may be. The VPN would allow for a more flexible work day, and help work get done when it needs to be done instead of during normal business hours. The VPN will run through the company firewall to help limit the traffic through to legitimate business traffic. The company must first be aware and understand the risks of a VPN and firewall. This knowledge will help the company make the right decision for this technology. A VPN and firewall solution is different for every network, and must be customized to this company's network. There is also risks to not using these tools. It is important for the company to see this risks as well, so ... Get more on HelpWriting.net ...
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  • 99. Virtual Private Networks Essay Virtual Private Networks Virtual Private Networks (VPNs) are an easy and cost effective way to connect two or more networks over the Internet. This is achieved by using encrypted tunnels for security and efficiency. VPNs use encapsulated and encrypted IP packets and transport them across leased Local Area Network (LAN) lines. The benefits of using VPNs are reduced cost overhead, reduced management overhead, and added security (Microsoft Press, 2000). Least network lines are expensive and VPNs reduce then need for extra data connections. This in turn also aids in reducing the amount of overhead associated with managing a network. The added security benefits for a network include encrypted transmission of network data and ... Show more content on Helpwriting.net ... Cryptographic authentication is used for remote user authentication. Windows and Unix platforms can both provide for this function. While payload encryption is used for encrypting the data that is sent within the packet. An example of data payload encryption is Secure Socket Layer (SSL). SSL can encrypt data without cryptographic authentication of the remote user. VPN cryptographic authentication is used to securely validate the identity of a remote user and determine the level of access and security appropriate for them. It may also be used to authenticate for the exchange of secret or public payload encryption keys. Shared secret or Private encryption keys rely on both parties knowing the keys value. Challenge response can be used to ensure that the hashes of the Private key and not the key itself are transmitted. In addition, one–time password variations can be employed to ensure that the Private key is changed every time that they are used. Before data is encapsulated and sent over the Internet, it is encrypted. This is called data payload encryption. Data payload encryption is used to encode all the contents of an IP packet, both data and header, to hide any information about the nature of the network and data being transmitted. This will prevent any snoopers from gathering information about the network that is sending the packet. Data ... Get more on HelpWriting.net ...
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  • 103. Virtual Private Networks Pros And Cons A VPN is one solution to establishing long–distance and/or open set of connection associations. VPNs is usually implemented (deployed) by businesses or organizations rather than by persons, but virtual networks be capable of reaching from within a home network. Compared to other technologies, VPNs offers several advantages, mainly profits for wireless local area networking. For an organization looking to supply a protected network communications for its client base, a VPN offers two major compensations over other technologies: price savings, and system scalability. To the clients accessing these networks, VPNs also carry a few payback of ease of use. Introduction VPNs, or Virtual Private Networks, permit users to steadily ... Show more content on Helpwriting.net ...  OpenVPN. Using a VPN To use a VPN, each client must have the suitable networking software or hardware maintain on their local network and computers. When set up appropriately, VPN solutions are easy to use and sometimes can be made to work involuntarily as part of set–up sign on. VPN technology also works well with Wi–Fi local area networking. Some organizations use VPNs to protected wireless connections to their local way in points when functioning within the office. These solutions give strong security without disturbing routine extremely. Limitations of a VPN Regardless of their fame, VPNs are not perfect and restrictions live as is true for any technology. Organizations be supposed to think about issues in the vein of the below while deploying and using virtual private networks in their operations: 1. VPNs need a complete thoughtful of network safety issues and alert setting up / configuration to make certain adequate safeguard on a public network like the Internet. 1. The consistency and presentation of an Internet–based VPN is not below an organization's straight control. In its place, the result relies on an ISP and their worth of service. 2. In olden times, VPN products and solutions as of different vendors have not always been well– suited due to issues with VPN technology standards. Attempting to Mix and match equipment may perhaps cause technological troubles, and use equipment from one contributor may not provide as enormous as a ... Get more on HelpWriting.net ...
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  • 107. Vpn Exists For Virtual Private Network Introduction VPN stands for Virtual Private Network. It provides a private network across the public network (Internet). This allows the user to transmit and receive data to the private network across Internet, like it is being directly connected to it. VPN has the characteristics of point–to–point and private link. To resemble a point–to–point link, the data is sent along with the routing information necessary to reach the destination through the public network. Data is encrypted and only the users in the network can access the resources in it, which resembles the characteristics of a private connection. Data sent through the VPN is very secure, as it cannot be deciphered without the encrypted keys. In VPN, tunnel is the part of the connection where data is encapsulated and VPN connection is the part of the connection where the data is encrypted. Figure 1: VPN Connectivity Overview VPN helps users working remotely to connect to the company infrastructure securely. Although it establishes the connection across the public network, user is not aware of it as it looks like data is being sent over a dedicated link. VPN connection is like a Wide Area Network (WAN) between two areas. VPN is commonly used in the following modes, ● Remote Access across public network – This allows the users to connect to the private network from anywhere. Using this solution more employees can telecommute. The client connects to the public network first and initiates a connection with the VPN ... Get more on HelpWriting.net ...
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  • 111. Using Encryption, Keys, And Virtual Private Networks A research project that synthesizes your knowledge of encryption, keys, and virtual private networks. Write a 5–7 page report on your findings. Encryption Encryption refers to a technique that facilitate the storage, transmission of information in a format that is unreadable to unintended audience. Unintended audience in this case may be hackers, sniffers, malwares e.t.c.the technique has been widely used to curb phishing in the current network security landscape. There are two fundamental techniques used in encrypting data: i.e. symmetric encryption (also referred to as secret key encryption) and asymmetric encryption (also referred to as public key encryption.) Symmetric Encryption/Secret Key Encryption. Symmetric encryption is the earliest and widely popular encryption technique. This technique uses a secret key which can be a string of words, numbers which are randomly selected to effect confidentiality. The secret Key is applied on the original message to change the content into a cipher. The modification of the message to the cipher might be a simple reordering of the message letter sequence to complex alterations. With the help of the secret key the sender and the recipient can encrypt and decrypt messages respectively. Symmetric key encryption therefore uses an identical key to encrypt and decrypt information. Due to its simplicity it is faster as compared to asymmetric encryption with the length of keys critical to the encryption security .NIST recommends that the ... Get more on HelpWriting.net ...
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  • 115. A Survey On Virtual Private Network Security And Its... A SURVEY ON VIRTUAL PRIVATE NETWORK SECURITY AND ITS TECHNOLOGY Abstract Virtual personal Network (VPN) may be a communication network that provides secure knowledge transmission in an unsecured or public network by mistreatment any combination of technologies. A virtual association is created across the users who are geographically spread and networks over a shared or public network, just like the internet. even supposing the info is transmitted during a public network, VPN provides a bearing as if the info is transmitted through personal connection. This paper provides a survey report on VPN security and its technologies. Keywords: Tunneling; Protocols; Authentication; Encryption; net Key Exchange. 1. Introduction A virtual ... Show more content on Helpwriting.net ... knowledge encapsulation is finished by wrapping the info with a header, that provides routing data. This method is named as tunneling. to supply confidentiality to the encapsulated knowledge, the info is secured by encoding. once knowledge reaches a tunnel finish purpose, the encapsulated knowledge is decrypted and forwarded to its final destination purpose. VPN permits organizations to attach to their branch offices or to alternative firms over a public network whereas maintaining secure communications. The VPN association across the web logically operates as a good space network (WAN) link between the sites. The secure association across the web seems to the user as {a personal|a personal|a non–public} network communication–despite the actual fact that this communication happens over a public internetwork– thus the name virtual private network. 2. VPN Security – an outline Security is that the most significant and important issue for firms worldwide. Organizations want a secure and reliable infrastructure for his or her systems to mitigate the chance of malicious activity from each external and internal sources. Organizations worldwide have major security considerations specifically knowledge access from the remote web site Infection by viruses Intrusion by hackers Disruption within the storage network To overcome the higher than mentioned threats and vulnerabilities within the network, VPN provides varied security measures. The ... Get more on HelpWriting.net ...
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  • 119. Overview of Virtual Private Networks Virtual Private Networks Virtual private networks (VPNs) were originally associated with remote connectivity services, such as public telephone networks and Frame Relay PVCs (VPN History). They evolved into IP based data networking. Early VPNs required extensive expertise to implement, but today deployment is simple and affordable. VPNs are based around technology that ensures strong authentication and encryption (Cartwright, 2003). Current VPN market trends are leaning towards smoothing out the rough edges of IPsec and MPLS, looking forward to additional applications of them, and ways to integrate them so that networks can communicate even if they were provisioned differently (VPN Market Trends). The market is focusing on improving gateway and client management software. There is also an emerging trend to improve security functions in their offerings and allow integration with other devices. The market trends involve improved service agreements in handling service problems. The communications industry is shifting toward cluster computing to tap into sharp increases in computing power, raise industry standards, and achieve reliability through product architecture (Macwan, 2006). There are two efforts of standardization, Service Availability Forum (SAF) and Carrier Grade Linux (CGL). Both standards strive to create standards with appeal to the telecom market in terms of marketplace standardization and the ability of third party independent software suppliers to produce ... Get more on HelpWriting.net ...
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  • 123. Vpn Services : A Virtual Private Network Introduction With the rise of business relying on technology as a crucial pillar to their companies, we find ourselves in a whole new frontier of network security. The days when having a secure office network meant your servers were behind locked doors is long gone. Everyday companies must deflect outside attacks from people down the street and across the globe. One of the biggest threats is man in the middle attacks, where an outside party can intercept vital information being sent from one device to another before it reaches it's destination. The solution to this problem lies in creating a Virtual Private Network, or VPN, to protect valuable information sent over a network. VPN Services A VPN is a private network used to connect a user ... Show more content on Helpwriting.net ... IPSec encrypts data and uses hashes to secure data. IPSec can also be used to create a "tunnel" between the two parties. By creating this "tunnel" you protect all your valuable information by creating a virtual private line to your destination (Tyson & Crawford). Penn State VPN Penn State has its own VPN in order to establish a secure connection with the Penn State network from your home ISP using the VPN client. The client has addresses for network servers at Penn State that are set up to manage these virtual networks (its.psu). These servers and the VPN client are what give you access to the internal Penn State servers, which you could not access without (its.psu.edu). The VPN client contacts these network servers and creates a private connection that allows you to safely connect and transfer files to and from Penn State (its.psu.edu). Penn State has many different VPN services that you can access from your home network. Two of these services are the "ISP to PSU" connection and the the "LIAS–VPN" connection. While both of these VPN services allow you to connect to the Penn State network from home they work differently. The "ISP to PSU" connection is a VPN that allows you to connect to the Penn State campus wireless from your home ISP. This is just a connection into the Penn State network, it does not change your IP address and it looks like you are still at home. The "LIAS–VPN" works in a different way. While you still connect from your home ISP, it changes ... Get more on HelpWriting.net ...
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  • 127. Firewall And Virtual Private Network The current system is an open network system without any kind of security. The computers don't have anti–malware programs and data is not backed up. Physical security is also weak without alarms, sprinkler, and cameras. The most secure networks combine hardware, software and physical security methods together, offering the most protection to all users of any network. Our plan will include network security, which will protect the network. It will protect the usability, reliability, integrity, and safety of the network and data. Plan will also include host based security system. These will include applications to monitor detect, and counterattack against the hosts networks and systems. There are many types of security methods can be used to secure a network. Network and host Security components will be, Anti–virus on each computers Firewall and Virtual Private Network(VPN) to block unauthorized access to the network and provide secure remote access Wi–Fi Protected Access 2 for the wireless security Firewall is a basic and easily implemented methods of the network security (software based). It will allow authorized access to computer while blocking unauthorized access by configuring access conditions based on user defined rules, IP. VPN will be used to encrypt connection across a network while using the internet as transmission medium. It builds a much secured data connection. VPN connection software encrypts the data being sent between one places to another. ... Get more on HelpWriting.net ...
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  • 131. Dynamic Multipoint Virtual Private Network Abstract The paper describes the overview of Dynamic Multipoint Virtual private Network (DMVPN) which is one of the tunneling technologies. With the advent of new modern era, VPN– based network are helping the businesses to send and receive sensitive data over public infrastructure which does add as a security feature. With budget as a concern for organizations, it is important for Network Engineers to not let go of the set infrastructure but also try to implement new methods to improvise as well as have backward compatibility. Typical VPN have been used as a need for connecting remote site–to–site businesses, however, with the ever growing needs it has become essential to provide a scalable as well as dynamic solution. DMVPN is one of the dynamic and scalable technologies to achieve scalability and also be dynamically evolving as per the demand. [2] I. Introduction Internet has grown rapidly over the past few years. MAN and WAN prove to be expensive due to leasing lines from Service providers. MPLS and Frame Relay have ruled the Wide Area Network over the years in providing private communication. It was needed for an intermediate solution which can provide security as well as be private. We can replace MPLS and Frame Relay with DMVPN as it uses a simple hub and spoke model similar to the one used in frame relay and also virtually separate different networks while maintaining the same infrastructure similar to what MPLS does. DMVPN is a Hub and spoke type of network. It is a ... Get more on HelpWriting.net ...
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  • 135. The Virtual Private Network System Introduction A virtual private network (VPN) is a system that utilizes public telecommunication infrastructure, such as the Internet, to offer remote offices or single users with safe access to their institution's network ( Collins, Keeley & Waye,2000). A virtual private network can be compared to an expensive system of held or rented lines that can only be utilized by a single organization. The aim of a VPN is to offer the institution with similar capabilities, but at very low costs (Hulsebosch,Belmont & Manke ,2011). A VPN functions by using the allocated public infrastructure while retaining confidentiality through safety processes and HYPERLINK "http://searchenterprisewan.techtarget.com/definition/tunneling"tunneling HYPERLINK "http://searchnetworking.techtarget.com/definition/protocol"protocols like the Layer Two Tunneling Protocol (HYPERLINK "http://searchenterprisewan.techtarget.com/definition/Layer–Two– Tunneling–Protocol"L2TP). In effect, the protocols, by encrypting data at the dispatching end and decrypting it at the receiving end, send the data via a tunnel that cannot be accessed by data that is not appropriately encrypted. An added degree of safety involves encrypting both the data and the originating and receiving system addresses.A VPN (Virtual Private Network) is therefore a means of generating a safer link to and from a network or computer system. VPNs have been utilized for years, but they have become stronger in recent years. They are reasonable and ... Get more on HelpWriting.net ...
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  • 139. Application Of Using An Application For A Communication... Any user using an application in a communication network will expect the quality of the application to be high without annoying interruptions or delays. In mobile environments due to user mobility, interference and varying channel conditions lead to a variation of the available network resources which ultimately affects application quality. An approach named over–the–top (OTT) virtual access network allows the aggregation of multiple wireless networks into a single IP pipe to provide users with more bandwidth. So how do you define bandwidth? "Bandwidth is a measurement of bit–rate of available or consumed data communication resources expressed in bits per second or multiples of it in computer networking and computer science" [1] The aim ... Show more content on Helpwriting.net ... Today's smartphones are equipped with at least two access technologies, e.g. Wi–Fi and Cellular (3G or 4G LTE). Furthermore, it is possible to use all available technologies for Internet access at the given time. One of the possible implementation of such a system is an OTT virtual access network based on UDP tunneling, which has been widely used in Mobile IP or for VPN (Virtual Private Networks). In order to minimize the energy consumption at the end device and the usage of the Cellular spectrum should be used only if necessary [17]. We can aggregate Wi–fi and Cellular link Based on the detailed information available for a certain application is possible [18], and can be compared in terms of benefits as well as drawbacks. The contribution of this paper is in two ways. We define three algorithms in the OTT VAN architecture which take application type or application quality into account. The objective is to address the application demands to achieve an effective network. We need evaluate these algorithms on a scenario basis. We will have to investigate a user watching a YouTube video clip under varying video quality, while both Cellular and Wi–Fi networks are available. We can evaluate the user aware quality, Cellular usage, and power consumption of the device using test–bed measurements. Cell phones get the energy from the batteries which is needed for their operation. Battery limit is seriously limited because of ... Get more on HelpWriting.net ...
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  • 143. Unit 3 Assignment 1 Vpn Research Paper A VPN is a secure protected network called a tunnel for communication purposes over long distances using the Internet as its means of transport. Due to the nature of the communication or transmissions that are being utilized by say a larger corporation, secure and reliable communication is a must. In the beginning these VPN connections were established using one or more dial up modems for users to access the information. Authentication was established by requiring the correct user name and password. As time went on as always things changed, new technology and advances in communication as well as equipment allowed the VPN to evolve and expand. To ensure security, the virtual tunnel is encrypted. VPNs use several protocols in order to encrypt ... Show more content on Helpwriting.net ... I believe that the VPN and its respective protocols is a very important step towards securing the Internet and all the data that travels over it every second of every day. In the future I think that there will be yet a faster, even more secure and reliable private connection, only 15 years ago or so the VPN was primarily a land line based technology, using common twisted pair for connection over a modem and going through a tel–co switch. In only 15 years we have progressed to optical networks, wireless networks, VPN networks of varying flavors. VPNs sound secure, and in theory they are, however, as with all technology and advances made towards protecting our data from unauthorized access by anyone who is not the intended recipient, is inevitable. Just recently the VPN protocol was breached, a way around the protocols and encryption was discovered and exploited. The hackers were able to circumvent two of the most trusted privacy tools on the Internet: virtual private networks, or VPNs, and Tor, the anonymity software that masks a computer's true whereabouts by routing its Internet connection through various points around the globe, according to findings by Jaime Blasco, a security researcher at AlienVault, a Silicon Valley ... Get more on HelpWriting.net ...
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  • 147. Virtual Private Network ( Vpn ) What is a Virtual Private Network? A virtual private network (VPN) is an addition of a private network that bridges the connection between a shared or public network. It allows you to send data between two computers in a point to point private link (Microsoft, Virtual Private Networking: An Overview). VPN allows individuals and companies to connect two locations securely and remotely. For example, if one company branch is in Secaucus, NJ and the other is in Newark, NJ; they can securely access the central resources and communicate with each other. Types of VPN? The common uses of a Virtual Private Network are: Remote Access over the Internet, Connecting Networks over the Internet, and Connecting Computers over Intranet. Remote access or PPTP VPN is the most commonly used VPN protocol. It enables the user to connect to the VPN network using a password login. They don't require extra resources such as expensive hardware and are usually available in an inexpensive software. Site to Site VPN allows different sites of the same organization to have their own network to connect together and form a VPN. It can be hardware or software based. Layer to Tunneling Protocol (L2TP) is similar to PPTP as not only it provides data confidentially but also data integrity. L2PT was invented by Cisco and Microsoft (Personalized). Image below drawn by Cisco. Layer 2 Protocol tunneling allows data units to be tunneled through a network. Edge Switch is connected to the client switch ... Get more on HelpWriting.net ...
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  • 151. Virtual Private Network ( Vpn ) Service And Steps This paper will cover Virtual Private Network (VPN) service and steps that should be taken prior to setup. Emphasis will be on network and operating system for the VPN services. It will look at the types of connections a small business might expect to encounter when using VPN 's. The security concerns of choices in the set up of the connections for both parties including: type of encryption available and Firewall issues. Last of all what are the overall security concerns when using a VPN including problems with a discussion of fixes and security patches. Security Concerns and the Use of VPN for Small Businesses Small businesses often operate on a tight budget; recently VPN 's have become a very cost effective way for them to connect ... Show more content on Helpwriting.net ... Before installing the VPN services, however, a number of things must be taken into consideration. By evaluating who is using the VPN, the hardware necessary to make good connections, the pros and cons of differing connection protocols, and evaluating past security problems, setting up the VPN services becomes a much smoother process. VPN 's and Firewalls Anyone who will be accessing the VPN services should have a firewall in place.Once a VPN connection is established, the client is essentially able to access information behind the company 's firewall, thus creating an access hole. Therefore, insisting a client use and maintain a firewall is another layer in the security of the VPN setup. The ease of changing the firewall rules to allow VPN connections should be addressed. Very old firewalls, either appliance types or software types, may be difficult or impossible to configure to allow VPN access.A small business may stay with an old firewall for many reasons, one of which might be the fact that there has been no reason to upgrade in the past. It would be prudent to check the firewall documentation before becoming enmeshed in the VPN process, only to have it fail for lack of access, or creating a setup that might be considered insecure. User Considerations When setting up the VPN server(s) at the main office, who is using the connection and how much access to the internal network, ... Get more on HelpWriting.net ...
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  • 155. Virtual Private Networks Virtual Private Networks Abstract With the increasing popularity of the Internet, new technologies have introduced to provide secure access to the resources from remote clients. Virtual Private Networks are becoming the most universal method for remote access. They enable service provider to take advantage of the power of Internet by providing a private tunnel through the public cloud to realize cost savings and productivity enhancements from remote access applications. VPNs securely convey information across the Internet connection to remote users, branch offices and business partners into an extended corporate network. This paper is an attempt to provide an overview of VPN and its services and how the ... Show more content on Helpwriting.net ... These devices do not have direct connectivity to the service provider network. C devices are not aware of the VPN. Customer Edge devices (CE) – These devices are located at the edge of the network and connect to the provider network. Service provider network devices also fall into two categories – Service Provider devices (P) – P devices are devices such as routers and switches within the provider network that do not directly connect to customer networks. P devices are unaware of customer VPNs. Service Provider Edge devices (PE) – These devices connect directly to the customer networks via CE devices. 2.2 VPN Gateways – A VPN Gateway handles the high speed encryption and decryption methods, provides tunneling services for passing data and generally makes sure that a VPN connection is established. Gateway can be software, or built on a firewall, or a router or server, or a security appliance. 2.3 Keys – Keys are used for the encryption and decryption of data. Sites can choose to maintain their own database of digital certificates (keys) for users by setting up a certificate server, or they can use an external certificate authority. 2.4 Network – There must be an internet infrastructure at both ends to provide the actual
  • 156. transmission medium. Some of these components may be built on a single device or spread over many devices over several sites. 3. GOALS OF VPN The service goal of VPNs is ... Get more on HelpWriting.net ...