ZyXEL Communications ZyXEL ZyWALL 5 - Manual (Page 21)

ZyWALL 5 User’s Guide
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33.2.1.2 User-Defined Address Mapping Sets ..........................................449
33.2.1.3 Ordering Your Rules ....................................................................450
33.3 Configuring a Server behind NAT ..................................................................451
33.4 General NAT Examples ..................................................................................454
33.4.1 Internet Access Only .............................................................................454
33.4.2 Example 2: Internet Access with an Default Server ..............................455
33.4.3 Example 3: Multiple Public IP Addresses With Inside Servers .............455
33.4.4 Example 4: NAT Unfriendly Application Programs ...............................459
33.5 Trigger Port Forwarding .................................................................................461
33.5.1 Two Points To Remember About Trigger Ports .....................................461
Chapter 34
Introducing the ZyWALL Firewall ....................................................................... 463
34.1 Using ZyWALL SMT Menus ...........................................................................463
34.1.1 Activating the Firewall ...........................................................................463
Chapter 35
Filter Configuration.............................................................................................. 465
35.1 Introduction to Filters ......................................................................................465
35.1.1 The Filter Structure of the ZyWALL ......................................................466
35.2 Configuring a Filter Set ..................................................................................468
35.2.1 Configuring a Filter Rule .......................................................................469
35.2.2 Configuring a TCP/IP Filter Rule ..........................................................470
35.2.3 Configuring a Generic Filter Rule .........................................................472
35.3 Example Filter ................................................................................................474
35.4 Filter Types and NAT ......................................................................................476
35.5 Firewall Versus Filters ....................................................................................476
35.6 Applying a Filter ............................................................................................477
35.6.1 Applying LAN Filters .............................................................................477
35.6.2 Applying DMZ Filters ............................................................................477
35.6.3 Applying Remote Node Filters ..............................................................478
Chapter 36
SNMP Configuration ............................................................................................ 479
36.1 SNMP Configuration ......................................................................................479
36.2 SNMP Traps ...................................................................................................480
Chapter 37
System Information & Diagnosis........................................................................ 481
37.1 Introduction to System Status ........................................................................481
37.2 System Status ................................................................................................481
37.3 System Information and Console Port Speed ................................................483
37.3.1 System Information ...............................................................................483