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

InfoSysSec Comprehensive collection of VPN guides, FAQs, tutorials and articles. Vendors and products; usage with Linux, NT and Unix; integration with firewalls, and mailing lists. http://www.infosyssec.net/infosyssec/secvpn1.htm

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

dtool -VPNs dtool is an excellent resource for Network Design, VPNs, Frame Relay, SNMP, Java, Javascript, CGI, Perl, HTML, Visual Basic, VBA, Windows 95/98 and Windows NT http://www.dtool.com/vpn.html

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

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

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

Find VPN Directory of VPN providers, articles, and links. http://www.findvpn.com

NW Fusion: Research: VPNs This is a comprehensive collection of VPN resources and articles. http://www.nwfusion.com/topics/vpns.html

VPN Info on the World Wide Web All-encompasing guide to VPN. Includes standards, reviews, legal information, and howtos. http://vpn.shmoo.com/

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

PC Security Weekly Weekly digest of computer security issues written for home users. http://www.pcsecurityweekly.com/