Virtual Private Networks Types and “How-To” using Vista Author: Andrew Sayers

Outline -Definition -Why Use a VPN -Most Common Types -Guide to Setting Up a VPN (Server-Side) (Vista)‏

Definition What is a VPN? - A VPN is a private network that is established within a public network. - Could either be created in a carrier's network or over the Internet.

Why Use a VPN Keep data confidential through encryption Ensure the identities of the parties communicating through authentication. Provides safeguard for the communicating parties through tunnelling. Ensure data is accurate and in original state through non-repudiation.

Types of VPN Internet VPN: Frame Relay VPN: Use certain protocols, such as: IPsec, L2TP and PPTP to provide secure "tunnels" over the Internet. Frame Relay VPN: A carrier offers point to point and multipoint VPN using frame relay. This type supports any network protocol. Can be costly, when adding locations in multipoint, this calls for provisioning more virtual circuits from one site to all others.

Types of VPN Virtual IP VPN: Ethernet VPN: A carrier offers multiport networks. Only accepts packets sent from customer. Virtual Private Routed Networks connect the customer's IP router to the provider's IP router. This connection requires some coordination. Ethernet VPN: A carrier has services that encapsulate Ethernet frames. These frames connect the two sections of network.

Setting Up a VPN (Server-Side)‏ Step 1: From Start go to, “All Programs,” then to “Administrative Tools,” then to “Configure Your Server Wizard.”

Setting Up a VPN (Server-Side)‏ Step 2: From the Next menu select the "Virtual Private Network VPN and NAT" selection and click Next.

Setting Up a VPN (Server-Side)‏ Step 3: The next screen from the wizard has you choose which network adapter to use to connect to the internet. (Should use a separate NA for VPNs.)

Setting Up a VPN (Server-Side)‏ Step 4: Select the network containing resources needed by external clients

Setting Up a VPN (Server-Side)‏ Step 5: You can either use a DHCP to assign addresses, or give your VPN server a range of available IP addresses to use.

Setting Up a VPN (Server-Side)‏ Step 6: Next you make your choice of which network adapter gives you access to the internet.

Setting Up a VPN (Server-Side)‏ Step 6: Next you are given the option to decide what type of authentication you want to provide.

Setting Up a VPN (Server-Side)‏ Step 7: Finally, you are presented with the RRAS wizzard summary window. (Routing and Remote Access Setup)

Setting Up a VPN (Vista)‏ Step 1: Click Start, move to Control Panel, Network and Internet, and finally stop on Network and Sharing Center.

Setting Up a VPN (Vista)‏ Step 2: Underneath Tasks selection menu on left, Select “Set up a connection or network.” Next, select “Connect to a Workplace” from the prompt.

Setting Up a VPN (Vista)‏ Step 3: From the next Menu select “No, create a new connection.”

Setting Up a VPN (Vista)‏ Step 4: Depending on your how you wish to connect you have 2 options: Connecting through the internet, or dialing directly through a phone number. For our use, I chose “Use my Internet Connection (VPN).”

Setting Up a VPN (Vista)‏ Step 5: The next step in Vista has you input the address of the Network. It also allows you to name create a user specified name.

Setting Up a VPN (Vista)‏ Step 6: Next you will encounter a Username/password input box, as well as the choice to select a domain. After information is entered select next.

Setting Up a VPN (Vista)‏ Step 7: If information is entered correctly the setup is almost completed.

Setting Up a VPN (Vista)‏ Step 8: Vista will prompt the user what type of VPN they have connected to.

Setting Up a VPN (Vista)‏ Step 9: The last and final step is just a verification screen of the information that you entered, also allows for viewing settings and networks on system.

Setting Up a VPN (Vista)‏ Common Problems: - Incorrectly input IP address. - Incorrect Username or Password. - Entering of improper Domain. - If direct dial option chosen, the incorrect input of telephone number.

Review -Brief Definition -Some Reasons as to Use a VPN -Most Common Types of VPN Brief Guide to Setting Up a VPN (Server-Side) -In Depth Guide to Setting Up a VPN (Vista)‏

Conclusion Question or Comments?

References http://www.pcmag.com/encyclopedia_term/0,2542,t=VPN&i=54123,00.asp http://compnetworking.about.com/od/vpn/ht/newvpnwindowsxp.htm http://www.skullbox.net/vpn.php http://i.i.com.com/cnwk.1d/i/tr/downloads/home/server_side_vpn.pdf http://www.chicagotech.net/vpnsetup.htm http://searchexchange.techtarget.com/originalContent/0,289142,sid43_gci10694 14,00.html http://en.wikipedia.org/wiki/Virtual_Private_Network