Internet Protocol Security in Virtual Private Networks Connectivity

Internet Protocol Security (IPSec) is a widely deployed mechanism for implementing Virtual Private Networks (VPNs). IPSec, proposed by Internet Engineering Task Force (IETF), is a popular tunneling technology adopted for the Virtual Private Network It provides the network layer additional security functionality to transform multiple segments of a private network into one. This paper evaluates the performance overheads associated with IPSec. We not only explore implementation issues of IPSec over popular operating systems, such as Windows and Linux, but also provide performance evaluation of the proposed algorithms by a series of experiments.