ZyXEL 2WG Guía Del Usuario

Chapter 18 Network Address Translation (NAT) Screens

ZyWALL 2WG User’s Guide

The following table summarizes the NAT mapping types.

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Port numbers do not change for One-to-One and Many-One-to-One NAT 
mapping types.

SUA (Single User Account) is a ZyNOS implementation of a subset of NAT that supports two 
types of mapping, Many-to-One and Server. The ZyWALL also supports Full Feature NAT 
to map multiple global IP addresses to multiple private LAN IP addresses of clients or servers 
using mapping types. Select either SUA or Full Feature in NAT Overview.
Selecting SUA means (latent) multiple WAN-to-LAN and WAN-to-DMZ address translation. 
That means that computers on your DMZ with public IP addresses will still have to undergo 
NAT mapping if you’re using SUA NAT mapping. If this is not your intention, then select 
Full Feature NAT and don’t configure NAT mapping rules to those computers with public IP 
addresses on the DMZ.

You must create a firewall rule in addition to setting up SUA/NAT, to allow traffic from the 
WAN to be forwarded through the ZyWALL.

Click ADVANCED > NAT to open the NAT Overview screen.

Table 113   NAT Mapping Types

One-to-One

ILA1 IJ IGA1

1-1

Many-to-One (SUA/PAT)

ILA1 IJ IGA1
ILA2 IJ IGA1
…

M-1

Many-to-Many Overload

ILA IJ IGA1
ILA2 IJ IGA2
ILA3 IJ IGA1
ILA4 IJ IGA2
…

M-M Ov

Many-One-to-One

ILA1 IJ IGA1
ILA2 IJ IGA2
ILA3 IJ IGA3
…

M-1-1

Server

Server 1 IP IJ IGA1
Server 2 IP IJ IGA1
Server 3 IP IJ IGA1

Server