Chapter 19. Encryption and Authentication

Table of Contents

19.1. Modes of using encryption and authentication

19.1.1. Transport mode
19.1.2. Tunnel mode

19.2. Support in kernel (ESP and AH)

19.2.1. Support in vanilla Linux kernel 2.4.x
19.2.2. Support in vanilla Linux kernel 2.6.x

19.3.1. IKE daemon "racoon"
19.3.2. IKE daemon "pluto"

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