VPN Overview

 

VPN (Virtual Private Network) can be comprised of a number of protocol, the most common being IP.  The actual hardware, or VPN units, such as the Nortel Contivity, are also called “Security Gateways”.  A security gateway can be either a dedicated IVPN unit such as the Nortel Contivity, or a router or firewall that supports VPN.

 

 

The most commonly sold VPN topology is dial-up access into a Security Gateway