ZyXEL Communications AMG1302 Manual Do Utilizador

Chapter 11 Network Address Translation (NAT)

AMG1302/AMG1202-TSeries User’s Guide

158

Figure 71

How NAT Works

11.5.4 NAT Application

The following figure illustrates a possible NAT application, where three inside LANs (logical LANs
using IP alias) behind the AMG1302/AMG1202-TSeries can communicate with three distinct WAN
networks.

Figure 72

NAT Application With IP Alias

11.5.5 NAT Mapping Types

NAT supports five types of IP/port mapping. They are:

192.168.1.13

192.168.1.10

192.168.1.11

192.168.1.12

192.168.1.10

IGA1

Inside Local
IP Address

192.168.1.10
192.168.1.11
192.168.1.12
192.168.1.13

Inside Global
IP Address
IGA 1
IGA 2
IGA 3
IGA 4

NAT Table

WAN

LAN

Inside Local
Address (ILA)

Inside Global
Address (IGA)