10. Virtual Private Networks
Contributed by Carl B. Constantine
The use of virtual private networks, or VPNs, is fast becoming the preferred method for accessing remote and private networks by home users and business users alike. This chapter discusses VPNs, providing both some background on VPNs themselves and insight on how you might implement a VPN using Linux.
Overview of Virtual Private Networks
VPN systems are designed to connect two or more devices or networks securely over a public network such as the Internet. A VPN is so named because it is virtual, using an already existing infrastructure; it is private, having the data encapsulated through a secure protocol; and it is a network, because it connects two or more devices or networks ...
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