Transcript Virtual Private Network (VPN)

Virtual Private Network
(VPN)
Jeffery Jones
James Santana
BA479
March 15,2006
Introduction
What is a VPN
 How a VPN works
 Hardware for Establishing a VPN
 Setting up a VPN
 Types of VPN
 Why have a VPN connection
 Securing the client
 Questions

What is a VPN

Private network

Created to address two problems
1.
High Cost
2.
Securely connecting
How a VPN Works





1.
2.
VPN uses a special protocol
Tunneling
Exchanges Data
Data safely wrapped and unwrapped
Two types of encryption systems
Symmetric key encryption
Public key encryption
These two types of encryption will be
discussed more in depth in BA483
Hardware for VPN

Desktop software client for each remote
user

Dedicated VPN server for dial-up services

NAS (network access server)

VPN network policy-management center
Setting up a VPN
Some of the factors that should be
considered in designing a VPN are:
 Security
 Reliability
 Scalability
 Network management
 Policy management
Setting up a VPN (continued)
You can set up a VPN two ways:
1.
2.
Between networks and firewalls or
encrypting routers to do the encrypting
and decrypting of the traffic.
Have a firewall, encrypting router, or VPN
server at the destination end and special
VPN client software on the desktop or
laptop computers.
Reasons to have a VPN

Its fast

Its easy to take with you wherever you go

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Its able to maintain security and keep you
hidden from others (mainly hackers)
Its dependable
Types of VPN
There are three types of VPN

Remote-access

Site to site intranet

Site to site extranet
Securing the Client

Breaking VPN Security

Laptop Owners
Precautions:

Personal firewall

Enable BIOS password
OSU VPN Setup
Too Bad….
Questions
Times? Up!!!!
References:
http://computer.howstuffworks.com/vpn.htm
http://www.vpnc.org/vpn-technologies.html
http://www.cisco.com/univercd/cc/td/doc/cisintwk/ito_doc/vpn.htm
http://www.microsoft.com/technet/prodtechnol/windows2000serv/pl
an/vpnoverview.mspx
http://en.wikipedia.org/wiki/Virtual_private_network