As a Webhost with more than a few servers, the benefits of having a private network setup between your servers are many. This private network allows your servers to communicate and transfer data securely among themselves. Most DCs offer this as an added feature to the services they provide. Previously, to access this network you would have to look for the expensive option of renting a leased line to the DC, but not anymore. This can now be achieved using a VPN.
Ok, Now what is a VPN?
VPN stands for Virtual Private Network. It allows you to connect securely to a private network over the Internet, and work as if you were a part of that network. It is based on the client/server architecture and it works on almost all platforms; including FreeBSD, Linux, Windows and MAC OS X. A VPN can be used to provide remote access to a private network or to connect two geographically separated private networks, using the Internet to carry the traffic. If you have outsourced your support team, you can have them setup a VPN between their network and the private network at the DC, allowing for improved productivity and security.