HP-UX IPSec version A.02.01 Administrator's Guide

HP-UX IPSec Overview
IPsec Protocol Suite
Chapter 142
• routing extensions
• fragment extensions
The items listed below follow the ESP header and are encrypted and
authenticated:
• any destination options needed only for the “final” destination and
not needed to interpret the ESP header
• the IP data or payload (e.g., TCP or UDP packet)
Figure 1-6 IPv6 ESP in Transport Mode
IPv6 ESP Tunnel Mode In IPv6 ESP tunnel mode (shown in
Figure 1-7), the packet layout is the same as IPv4 ESP tunnel mode,
except that the original and new (outer) IP headers may include header
extensions.
Figure 1-7 IPv6 ESP in Tunnel Mode