User`s guide

Table of Contents
LAN-Cell 2 User’s Guide
15
31.4 Edit IP .............................................................................................................................. 469
31.5 Remote Node Filter ......................................................................................................... 471
Chapter 32
IP Static Route Setup............................................................................................................473
32.1 IP Static Route Setup ...................................................................................................... 473
Chapter 33
Network Address Translation (NAT)....................................................................................477
33.1 Using NAT ........................................................................................................................ 477
33.1.1 SUA (Single User Account) Versus NAT ................................................................ 477
33.1.2 Applying NAT ......................................................................................................... 477
33.2 NAT Setup ....................................................................................................................... 479
33.2.1 Address Mapping Sets ........................................................................................... 480
33.3 Configuring a Server behind NAT .................................................................................... 484
33.4 General NAT Examples ................................................................................................... 487
33.4.1 Internet Access Only .............................................................................................. 487
33.4.2 Example 2: Internet Access with a Default Server ................................................. 488
33.4.3 Example 3: Multiple Public IP Addresses With Inside Servers .............................. 489
33.4.4 Example 4: NAT Unfriendly Application Programs ................................................. 492
33.5 Trigger Port Forwarding ...................................................................................................494
33.5.1 Two Points To Remember About Trigger Ports ...................................................... 494
Chapter 34
Firewall Status.......................................................................................................................497
34.1 Firewall SMT Menus ........................................................................................................497
34.1.1 Activating the Firewall ............................................................................................ 497
Chapter 35
Filter Configuration...............................................................................................................499
35.1 Introduction to Filters ....................................................................................................... 499
35.1.1 The Filter Structure of the LAN-Cell ....................................................................... 500
35.2 Configuring a Filter Set .................................................................................................... 502
35.2.1 Configuring a Filter Rule ........................................................................................ 503
35.2.2 Configuring a TCP/IP Filter Rule ............................................................................ 504
35.2.3 Configuring a Generic Filter Rule ........................................................................... 506
35.3 Example Filter .................................................................................................................. 508
35.4 Filter Types and NAT ....................................................................................................... 510
35.5 Firewall Versus Filters ..................................................................................................... 510
35.5.1 Packet Filtering: ..................................................................................................... 510
35.5.2 Firewall ....................................................................................................................511
35.6 Applying a Filter ...............................................................................................................511
35.6.1 Applying LAN Filters ............................................................................................... 512