Using Nat - ZyXEL Communications ZyXEL ZyWALL 2WE User Manual

ZyWALL 2 and ZyWALL 2WE
Server

12.2 Using NAT

You must create a firewall rule in addition to setting up SUA/NAT, to allow traffic
12.2.1 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 section 12.3.1 for a 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 as outlined in Table 12-2.
1. Choose SUA Only if you have just one public WAN IP address for your ZyWALL.
2. Choose Full Feature if you have multiple public WAN IP addresses for your ZyWALL.
12.2.2 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
12-6
Table 12-2 NAT Mapping Types
TYPE
Server 1 IP
Server 2 IP
Server 3 IP
from the WAN to be forwarded through the ZyWALL.
IP MAPPING
IGA1
IGA1
IGA1
SMT ABBREVIATION
Server
NAT