Using Nat; Sua (Single User Account) Versus Nat; Nat Overview Screen; Table 92 Nat Mapping Types - ZyXEL Communications ZYWALL 2 PLUS User Manual

The following table summarizes the NAT mapping types.

Table 92 NAT Mapping Types

TYPE
One-to-One
Many-to-One (SUA/PAT)
Many-to-Many Overload
Many-One-to-One
Server

17.2 Using NAT

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.

17.2.1 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.

17.3 NAT Overview Screen

Click ADVANCED > NAT to open the NAT Overview screen.
ZyWALL 2 Plus User's Guide
Chapter 17 Network Address Translation (NAT)
IP MAPPING
ILA1 IGA1
ILA1 IGA1
ILA2 IGA1
...
ILA IGA1
ILA2 IGA2
ILA3 IGA1
ILA4 IGA2
...
ILA1 IGA1
ILA2 IGA2
ILA3 IGA3
...
Server 1 IP IGA1
Server 2 IP IGA1
Server 3 IP IGA1
SMT ABBREVIATION
1-1
M-1
M-M Ov
M-1-1
Server
313