The Goal of IPsec

To best understand how IPsec operates, let’s take a look at a simple topology that we can use as a framework for this entire chapter, shown here in Figure 6-1.

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Figure 6-1 IPsec Example Topology

IPsec has four fundamental goals, as shown in Table 6-2.

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Table 6-2 IPsec Goals and the Methods Used to Implement Them

The goals can be described as follows:

Image Confidentiality: Provided through encryption changing clear text into cipher ...

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