ZyXEL Communications ZyXEL ZyWALL 35 - Manual (Page 299)

ZyWALL 35 User’s Guide
Chapter 16 Network Address Translation (NAT) 297
16.2 Using NAT
16.2.1 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. 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. Select either SUA or Full Feature in NAT Overview.
Selecting SUA means (latent) multiple WAN-to-LAN and WAN-to-DMZ address translation.
That means that computers on your DMZ with public IP addresses will still have to undergo
NAT mapping if you’re using SUA NAT mapping. If this is not your intention, then select
Full Feature NAT and don’t configure NAT mapping rules to those computers with public
IP addresses on the DMZ.
16.3 Configuring NAT Overview
Click NAT to open the NAT Overview screen shown next.
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.