ZyXEL 202H 91-003-194001B User Manual

P-202H Plus v2 User’s Guide

Chapter 23 Network Address Translation (NAT)

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This chapter discusses how to configure NAT on the ZyXEL Device.

Note: You must create a firewall rule in addition to setting up SUA/NAT, to allow traffic 

from the WAN to be forwarded through the ZyXEL Device.

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 

 for a detailed 

description of the NAT set for SUA. The ZyXEL Device also supports Full Feature NAT to 
map multiple global IP addresses to multiple private LAN IP addresses of clients or servers 
using mapping types.

Note: Choose SUA Only if you have just one public WAN IP address for your ZyXEL 

Device.

Choose Full Feature if you have multiple public WAN IP addresses for your 
ZyXEL Device.

You apply NAT via menus 4 or 11.3 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.