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IP Security Architecture (IPsec) provides cryptographic protection for IP packets in IPv4 and IPv6 networks.
This chapter covers the following topics:
Introduction to IPsec
IPsec Packet Flow
IPsec Security Associations
IPsec Protection Protocols
IPsec Protection Policies
Transport and Tunnel Modes in IPsec
Virtual Private Networks and IPsec
IPsec and FIPS 140
IPsec and SCTP
IPsec Configuration Commands and Files
To implement IPsec on your network, see Chapter 7, Configuring IPsec. For reference information, see Chapter 12, IPsec and Key Management Reference.