7.1. VPN Solutions
Three broad categories of VPNs are in general use today: dedicated line, dial in, and IP VPN. IP VPN will be the primary focus of this chapter, as it is quickly becoming the VPN type of choice for large corporations.
7.1.1. Dedicated Line VPNs
Dedicated line VPNs have been the type of VPN traditionally associated with large corporations. The process is fairly simple: A company with one or more remote offices contacts either a network provider such as AT&T, Sprint, or WorldCom, or an Incumbent Local Exchange Carrier (ILEC) like Verizon, BellSouth, or Pacific Bell and requests to have point-to-point connections run between offices. These point-to-point connections can either be leased lines or wireless connections, but they ...
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