Virtual Private Networks
James T. Harmening, Computer Bits, Inc.
With the incredible advance of the Internet, it has become more and more popular to set up virtual private networks (VPNs) within organizations. Two types of VPNs are typically employed. The first will connect two separate local area networks (LANs), in different locations, to each other; while the second is a single remote computer connecting through the Internet, back to the home network. VPNs have been around for many years and have branched out into more and more varieties. (See Figure 48.1 for a high-level view of a VPN.) Once only the largest of organizations would utilize VPN technology to connect multiple networks over the Internet “public networks,” but now ...
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