Point-to-Point Distributed VPN System Based on IP

Raise the concept of distributed VPN and create the system model, which extend the concept of classical VPN. From the as aspects of security, it overcome the classical VPN's disadvantages of failing to protect the internal communication of LANs. The result of DVPN's performance analyzing indicates that it can enhance the parallelity of the system,reduce the storage requirement from complexity O(n2) to O(n) and make the database grow linearly. As well,give a system implementation, which proves that it can improve the security and efficiency of the system.