Definition of Virtual Private Network

A Virtual Private Network is software hosted on two machines, which forwards network traffic between them. The packets exchanged between the machines is protected against Intruder's equipped with Packet Sniffer's using Encryption. All packets that pass through the network are encrypted, and so provide little or no value to an Intruder.

A Virtual Private Network makes it possible to pass private data over a public network, thus simulating a private network without the expense of separate, protected communication media.