Virtual Private Networks

About.com VPN directory - A smattering of VPN resources including a glossary and a self-test.
compnetworking.about.com/cs/vpn/index.htm

Corecom VPN FAQ Page - Geared towards those new to VPN.
www.corecom.com/external/vpn/vpnfaq.htm

Find VPN - Directory of VPN providers, articles, and links.
www.findvpn.com

How Stuff Works: How Virtual Private Networks Work - Gives definition of VPN and an overview of general VPN topics, includes diagrams and an animation.
www.howstuffworks.com/vpn.htm

NW Fusion: Research: VPNs - A collection of VPN resources and articles.
www.nwfusion.com/topics/vpns.html

Tom Dunigan's Virtual Private Networks page - This page describes IP-based VPN technology over the Internet
www.csm.ornl.gov/~dunigan/vpn.html

Virtual Private Network Consortium - VPNC is the international trade association for manufacturers in the VPN market.
www.vpnc.org/

VPN labs - research community - VPN labs is an open community for researching, reviewing, and discussing Virtual Private Networks.
www.vpnlabs.org/