3Com Switch 8800 Family IPsec Module Configuration and Command reference Guide

NAT Configuration 86
Displaying and Debugging NAT 91
NAT Configuration Example 91
Troubleshooting NAT Configuration 94
7 VPN OVERVIEW
VPN Overview 97
Fundamental Technology of VPN 98
Classification of VPN 101
8 CONFIGURATION OF L2TP
Introduction to L2TP Protocol 103
LAC Configuration 108
LNS Configuration 115
Displaying and Debugging L2TP 122
L2TP Configuration Example 123
L2TP Troubleshooting 127
9 CONFIGURATION OF GRE
Brief Introduction to GRE 129
GRE Configuration 132
Displaying and Debugging GRE 136
GRE Configuration Example 136
GRE Troubleshooting 140
10 IPSEC CONFIGURATION
IPsec Overview 143
IPsec Configuration 148
Displaying and Debugging IPsec 164
IPsec Configuration Example 167
IPsec Troubleshooting 170
11 IKE CONFIGURATION
IKE Overview 171
IKE Configuration 173
Displaying and Debugging IKE 180
Typical Configuration of IKE 181
IKE Fault Diagnosis and Troubleshooting 185
12 PKI CONFIGURATION
PKI Overview 187
Certificate Request Configuration 188
Certificate Validation Configuration 197
Displaying and Debugging 199