The key technology to connect each node (computer) to the internet is “Virtual Private Network (VPN)”. One has to hire a modem supported link or VPN from a third party service provider, by paying a izeable service charge. The units to evaluate the quality of a VPN are Bandwidth, Process speed, Message pocket loss factor, Safety & Security of the data etc.. How to evaluate a VPN with reference to these complex factors and justify the Cost with Benefits gained ? This book reviews the past and current contributions to VPNs, evaluates them, with reference to Barbasi-Albert and Waxman topological standards (widely accepted and recognized international standards). Supported by these analysis, their contributions, through Research extensions and Development, the author has developed an innovative and new provisioning algorithm called “COPVA” This is an original and exclusive design of the author, implemented and tested with Barbasi-Albert and Waxman standards. This opens a new approach to build a self designed VPN with optimized quality components. This has an unique, immense and valuable contribution to the universe of VPNs !!