Connect Users to Private Networks Securely over Public Networks using Virtual Private Networks

Abstract

We propose simple and robust mechanism that an intercepted packet reveal nothing about the true destination system in Virtual Private Networks using tunnel mode and can be used to enable remote offices and users to connect to private networks securely over public networks.

Keywords: virtual private network, network access server (NAS), internet security and acceleration (ISA) server, Point to Point Tunneling Protocol (PPTP), Layer2 Tunneling Protocol(L2TP),or Internet Security Protocol(IPSec)