3Com Switch 8800 Family Firewall Module Configuration and Command Reference Guide

NAT Configuration 82
Displaying and Debugging NAT 87
NAT Configuration Example 87
Troubleshooting NAT Configuration 90
7 FIREWALL CONFIGURATION
Introduction to Firewall 93
Configuring Packet Filter Firewall 97
Configuring ASPF 104
Black List 110
MAC and IP Address Binding 115
Security Zone Configuration 119
8 TRANSPARENT FIREWALL
Transparent Firewall Overview 121
Configuring Transparent Firewall 125
Displaying and Debugging Transparent Firewall 128
Transparent Firewall Configuration Example 129
9 WEB AND E-MAIL FILTERING
Introduction to Web and E-mail Filtering 133
Configuring Web Filtering 133
Configuring E-mail Filtering 139
10 ATTACK PREVENTION AND PACKET STATISTICS
Overview of Attack Prevention and Packet Statistics 145
Configuring Attack Prevention 147
Setting the Warning Level in Monitoring the Number and Rate of Connections 157
Configuring System-Based Statistics 158
Configuring Zone-Based Statistics 159
Configuring IP-Based Statistics 161
Displaying and Debugging Attack Prevention and Packet Statistics 163
Configuring an SMTP Client 164
Configuring DNS Client 165
Attack Prevention and Packet Statistics Configuration Example 167
Attack Prevention Troubleshooting 180
11 LOG MAINTENANCE
Introduction to Log 181
Configuring Syslog Log 182
Binary-Flow Log Configuration 183
Clearing Log 184
Log Configuration Example 184