Chapter 13. IPsec

This chapter covers the following topics:

  • Types of IPsec VPNs— This section lays out the two main types of IPsec VPNs.

  • Composition of IPsec— This section introduces the protocols that are combined to create the IPsec protocol suite.

  • Introduction to IKE— This section discusses some of the basic information about IKE and how it works in the context of the IPsec protocol.

  • IPsec Negotiation Using the IKE Protocol— This section talks about how IKE is used to negotiate IPsec tunnels between two peers. Packet-by-packet details of all transactions are given for main mode, aggressive mode, and quick mode negotiations.

  • IKE Authentication Methods— This section discusses the IKE authentication methods while focusing on the most important ...

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