ZyXEL Communications 70 Series - Manual (Page 26)

ZyWALL 5/35/70 Series User’s Guide
Table of Contents 26
42.2 NAT Setup ......................................................................................................564
42.2.1 Address Mapping Sets ..........................................................................565
42.2.1.1 SUA Address Mapping Set .........................................................565
42.2.1.2 User-Defined Address Mapping Sets ..........................................566
42.2.1.3 Ordering Your Rules ....................................................................567
42.3 Configuring a Server behind NAT ..................................................................569
42.4 General NAT Examples ..................................................................................572
42.4.1 Internet Access Only .............................................................................572
42.4.2 Example 2: Internet Access with an Default Server ..............................574
42.4.3 Example 3: Multiple Public IP Addresses With Inside Servers .............574
42.4.4 Example 4: NAT Unfriendly Application Programs ...............................578
42.5 Trigger Port Forwarding .................................................................................579
42.5.1 Two Points To Remember About Trigger Ports .....................................579
Chapter 43
Introducing the ZyWALL Firewall ....................................................................... 582
43.1 Using ZyWALL SMT Menus ...........................................................................582
43.1.1 Activating the Firewall ...........................................................................582
Chapter 44
Filter Configuration.............................................................................................. 584
44.1 Introduction to Filters ......................................................................................584
44.1.1 The Filter Structure of the ZyWALL ......................................................585
44.2 Configuring a Filter Set ..................................................................................587
44.2.1 Configuring a Filter Rule .......................................................................588
44.2.2 Configuring a TCP/IP Filter Rule ..........................................................589
44.2.3 Configuring a Generic Filter Rule .........................................................591
44.3 Example Filter ................................................................................................593
44.4 Filter Types and NAT ......................................................................................595
44.5 Firewall Versus Filters ....................................................................................595
44.6 Applying a Filter ............................................................................................596
44.6.1 Applying LAN Filters .............................................................................596
44.6.2 Applying DMZ Filters ............................................................................596
44.6.3 Applying Remote Node Filters ..............................................................597
Chapter 45
SNMP Configuration ............................................................................................ 598
45.1 SNMP Configuration ......................................................................................598
45.2 SNMP Traps ...................................................................................................599
Chapter 46
System Information & Diagnosis........................................................................ 600
46.1 Introduction to System Status ........................................................................600