VPN: Virtual Private Network

Presented By:Gregg Dowdy

Liz Farricker

Whitney Mayoras

Outline

Introductions What is it? Overview Security/Tunneling Advantages and Disadvantages Demonstration

Introductions

Gregg BSG – Student Developer Unified Western Grocers – Retail Technology

Specialist Liz

BSG – Business Analyst ResNet – Network Technician COB CRC: Tier 2/3 Support Technician

Whitney BSG – Student Tester/Analyst

VPN: What is it?

Virtual Private Network Remote network communication through

Internet Used by companies/organizations who want

to communicate confidentially Two parts:

Protected or “inside” network “Outside” network or segment (less trustworthy)

VPN: Types

Secure VPNs use cryptographic tunneling protocols. IPsec, SSL/TLS, OpenVPN, PPTP, L2TP,

L2TPv3, VPN-Q and MPVPN Trusted VPNs rely on the security of a

single provider’s network to protect the traffic. MPLS and L2F

VPN: Security

Encryption IPSec Authentication

User/System and Data AAA Servers

(Authentication, Authorization, and Accounting)

Firewalls

VPN: Tunneling

Requires 3 protocols Carrier

Default network protocol Passenger

Original data Encapsulation

GRE, IPSec, L2F, PPTP, L2TP

VPN: Encapsulation

Figure 1

VPN: Tunneling (cont.)

Two Basic types of tunneling Site-to-Site

Typically uses GRE Remote-Access

Typically uses PPP

VPN: Advantages

Cost Effective Greater scalability Easy to add/remove users Mobility Security

VPN: Disadvantages

Understanding of security issues Unpredictable Internet traffic Difficult to accommodate products

from different vendors

VPN Demonstration

Click on Start – select Network Connections

VPN Demonstration

In Network Connections on the left hand side there is a link to “Create New Connection” – click on this and a wizard will pop up assisting the user

VPN Demonstration

Select “Connect to the Network at my Workplace”

VPN Demonstration

Select “Virtual Private Network Connection”

VPN Demonstration

Make a name for this connection that you are establishing – to distinguish this connection from other VPN connections that might already be established

VPN Demonstration

For this demonstration I am trying to connect to my wireless router off campus therefore the IP address that I insert is the IP address for my router which I can find out by running an ipconfig and it is the IP address for your default gateway

NOTE: Not all routers will allow users to VPN into it

VPN Demonstration

Personal preference as to whether or not you want other users to be able to use this VPN connection on this computer

VPN Demonstration

VPN Demonstration

VPN Demonstration

This is a profile (username and password) that has already been created on your router – which can be created by typing in the IP address of your router in a web browser

VPN Demonstration

VPN Demonstration

In Start – Run insert the IP address of the computer that you want to access that is connected to the router

VPN Demonstration

Using the same username and password already established for the router you can connect to this specific computer

VPN Demonstration

These are only the files that are “shared” on this computer

How to Connect to OSU:

How to connect to OSU: Dave Sullivan made a helpful Tutorial First on the Engineering Website you have to download

the Cisco VPN Client One must acquire authorization information prior to

using the VPN service Once registration is complete you download the

appropriate client depending on your operating system; and follow the steps to complete the connection

References

[Figure 1] <www.csun.edu/~vcact00f/311/termProjects/700class/VPN.ppt>

Mitchell, Bradley. "VPN Tutorial." About.Com. 2007. 8 Mar. 2007 <http://compnetworking.about.com/od/vpn/l/aa010701a.htm>.

Tyson, Jeff. "How Virtual Private Networks Work." How Stuff Works. 6 Mar. 2007 <http://computer.howstuffworks.com/vpn.htm>.

"Virtual Private Network." Wikipedia: the Free Encyclopedia. 6 Mar. 2007. 9 Mar. 2007 <http://en.wikipedia.org/wiki/Vpn>.