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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

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VPN: Virtual Private Network

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VPN: Virtual Private Network

Presented By:

Gregg Dowdy

Liz Farricker

Whitney Mayoras


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Outline

  • Introductions

  • What is it?

  • Overview

  • Security/Tunneling

  • Advantages and Disadvantages

  • Demonstration


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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


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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)


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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


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VPN: Security

  • Encryption

  • IPSec

  • Authentication

    • User/System and Data

    • AAA Servers

      (Authentication, Authorization, and Accounting)

  • Firewalls


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VPN: Tunneling

  • Requires 3 protocols

    • Carrier

      • Default network protocol

    • Passenger

      • Original data

    • Encapsulation

      • GRE, IPSec, L2F, PPTP, L2TP


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VPN: Encapsulation

Figure 1


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VPN: Tunneling (cont.)

  • Two Basic types of tunneling

    • Site-to-Site

      • Typically uses GRE

    • Remote-Access

      • Typically uses PPP


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VPN: Advantages

  • Cost Effective

  • Greater scalability

  • Easy to add/remove users

  • Mobility

  • Security


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VPN: Disadvantages

  • Understanding of security issues

  • Unpredictable Internet traffic

  • Difficult to accommodate products from different vendors


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VPN Demonstration

Click on Start – select Network Connections


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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


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VPN Demonstration

Select “Connect to the Network at my Workplace”


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VPN Demonstration

Select “Virtual Private Network Connection”


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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


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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


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VPN Demonstration

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


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VPN Demonstration


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VPN Demonstration


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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


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VPN Demonstration


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VPN Demonstration

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


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VPN Demonstration

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


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VPN Demonstration

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


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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


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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>.


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