![background image](/i/zyxel/144701/zyxel-zywall-2wg-ee/h/zyxel-zywall-2wg-ee-591.png)
ZyWALL 2WG User’s Guide
591
C
H A P T E R
39
Network Address Translation
(NAT)
This chapter discusses how to configure NAT on the ZyWALL.
39.1 Using NAT
"
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.
39.1.1 SUA (Single User Account) Versus NAT
SUA (Single User Account) is a ZyNOS implementation of a subset of NAT that supports two
types of mapping,
Many-to-One
and
Server
. See
description of the NAT set for SUA. 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
.
"
Choose
SUA Only
if you have just one public WAN IP address for your
ZyWALL.
Choose
Full Feature
if you have multiple public WAN IP addresses for your
ZyWALL.
39.1.2 Applying NAT
You apply NAT via menu 4 or 11.1.2 as displayed next. The next figure shows you how to
apply NAT for Internet access in menu 4. Enter 4 from the main menu to go to
Menu 4 -
Internet Access Setup
.