ZyXEL Communications ADSL/ADSL2/ADSL2+ Router 660R-6xC Series, User Manual

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Prestige 660R-6xC Series User’s Guide
Chapter 21 Network Address Translation (NAT) 158
C
H A P T E R
21
Network Address Translation
(NAT)
This chapter discusses how to configure NAT on the Prestige.
21.1 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 the NAT Setup section or a detailed
description of the NAT set for SUA. The Prestige also supports
Full Feature
NAT to map
multiple global IP addresses to multiple private LAN IP addresses of clients or servers using
mapping types
.
21.2 Applying NAT
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 .
Note: 1. Choose SUA Only if you have just one public WAN IP
address for your Prestige.
2. Choose
Full Feature if you have multiple public WAN IP
addresses for your Prestige.