Chapter 16. Securing Site-to-Site Connectivity
Up to this point in our WAN discussions, we have covered access options, including leased lines, Frame Relay, cable, digital subscriber line (DSL), and wireless. Now it is time to turn our attention toward a popular solution for linking two sites or a teleworker to the corporate office. With the use of generic routing encapsulation (GRE) and IP security (IPsec), virtual private networks (VPNs) play an important role in today’s network implementations.
VPNs
With the proper implementation at that central site, VPNs provide the flexibility of having safe and secure connections regardless of the underlying access technology. This is increasingly important as more users need or want access to their corporate ...
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