ZyWALL 5 User’s Guide
20
33.4.3 Example 3: Multiple Public IP Addresses With Inside Servers .............453
33.4.4 Example 4: NAT Unfriendly Application Programs ...............................457
33.5 Trigger Port Forwarding .................................................................................459
33.5.1 Two Points To Remember About Trigger Ports .....................................459
Chapter 34
Introducing the ZyWALL Firewall ....................................................................... 461
34.1 Using ZyWALL SMT Menus ...........................................................................461
34.1.1 Activating the Firewall ...........................................................................461
Chapter 35
Filter Configuration.............................................................................................. 463
35.1 Introduction to Filters ......................................................................................463
35.1.1 The Filter Structure of the ZyWALL ......................................................464
35.2 Configuring a Filter Set ..................................................................................466
35.2.1 Configuring a Filter Rule .......................................................................467
35.2.2 Configuring a TCP/IP Filter Rule ..........................................................468
35.2.3 Configuring a Generic Filter Rule .........................................................470
35.3 Example Filter ................................................................................................472
35.4 Filter Types and NAT ......................................................................................474
35.5 Firewall Versus Filters ....................................................................................474
35.6 Applying a Filter ............................................................................................475
35.6.1 Applying LAN Filters .............................................................................475
35.6.2 Applying DMZ Filters ............................................................................475
35.6.3 Applying Remote Node Filters ..............................................................476
Chapter 36
SNMP Configuration ............................................................................................ 477
36.1 SNMP Configuration ......................................................................................477
36.2 SNMP Traps ...................................................................................................478
Chapter 37
System Information & Diagnosis........................................................................ 479
37.1 Introduction to System Status ........................................................................479
37.2 System Status ................................................................................................479
37.3 System Information and Console Port Speed ................................................481
37.3.1 System Information ...............................................................................481
37.3.2 Console Port Speed ..............................................................................482
37.4 Log and Trace ................................................................................................483
37.4.1 Viewing Error Log .................................................................................483
37.4.2 Syslog Logging .....................................................................................484
37.4.3 Call-Triggering Packet ..........................................................................487
37.5 Diagnostic ......................................................................................................487
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