Windows Server® 2012 Unleashed
by Rand Morimoto, Michael Noel, Guy Yardeni, Omar Droubi, Andrew Abbate, Chris Amaris
Exploring VPN Tunnels
The connection made by VPN clients across an unsecured network is known as a VPN tunnel. It is named as such because of the way it “tunnels” underneath the regular traffic of the unsecured network.
VPN tunnels are logically established on a point-to-point basis, but can be used to connect two private networks into a common network infrastructure. In many cases, for example, a VPN tunnel serves as a virtual wide-area network (WAN) link between two physical locations in an organization, all while sending the private information across the Internet. VPN tunnels are also widely used by remote users who log on to the Internet from multiple locations and establish VPN tunnels to a centralized VPN server in the organization’s home ...
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