Windows Server® 2012 Unleashed

Deploying a Virtual Private Network Using RRAS

A common method of securing information sent across unsecured networks is to create a virtual private network (VPN), which is effectively a connection between two private nodes or networks that is secured and encrypted to prevent unauthorized snooping of the traffic between the two connections. From the client perspective, a VPN looks and feels just like a normal network connection between different segments on a network—hence the term virtual private network.

Data that is sent across a VPN is encapsulated, or wrapped, in a header that indicates its destination. The information in the packet is then encrypted to secure its contents. The encrypted packets are then sent across the network to the destination ...