Chapter 18. Encryption and Authentication

Table of Contents
18.1. Modes of using encryption and authentication
18.1.1. Transport mode
18.1.2. Tunnel mode
18.2. Support in kernel (ESP and AH)
18.2.1. Support in vanilla Linux kernel 2.4.x
18.2.2. Support in vanilla Linux kernel 2.6.x
18.3. Automatic key exchange (IKE)
18.3.1. IKE daemon "racoon"
18.3.2. IKE daemon "pluto"
18.4. Additional informations:

Unlike in IPv4, encryption and authentication is a mandatory feature of IPv6. Thesex features are normally implemented using IPsec (which can be also used by IPv4).