Network Address Translation (Nat); Using Nat; Sua (Single User Account) Versus Nat; Applying Nat - ZyXEL Communications ZyWall 35 User Manual

Network Address Translation
This chapter discusses how to configure NAT on the ZyWALL.

34.1 Using NAT

34.1.1 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
detailed 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.

34.1.2 Applying NAT

You apply NAT via menus 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.
Chapter 34 Network Address Translation (NAT)
C
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 ZyWALL.
Note: Choose SUA Only if you have just one public WAN IP
address for your ZyWALL.
Note: Choose Full Feature if you have multiple public WAN IP
addresses for your ZyWALL.
ZyWALL 35 User's Guide
H A P T E R
the Address Mapping Sets section
3 4
(NAT)
for a
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