Using Nat; Sua (Single User Account) Versus Nat; Table 114 Nat Mapping Types - ZyXEL Communications ZyXEL ZyWALL 2WG User Manual

• Server: This type allows you to specify inside servers of different services behind the
NAT to be accessible to the outside world although, it is highly recommended that you use
the DMZ port for these servers instead.
Port numbers do not change for One-to-One and Many-One-to-One NAT
mapping types.
The following table summarizes the NAT mapping types.

Table 114 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.
ZyWALL 2WG 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
389