Sua (Single User Account) Versus Nat; Configuring Nat; Table 41 Nat Mapping Types - ZyXEL Communications VANTAGE CNM 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.
The following table summarizes these types.

Table 41 NAT Mapping Types

One-to-OneILA1⇓◊ IGA1 1-1
Many-to-One (SUA/PAT)
Many-to-Many Overload
Many-One-to-One
Server

9.1.5 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 ZyXEL device 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 Only or Full Feature in WAN IP.
Selecting SUA Only means (latent) multiple WAN-to-LAN and WAN-to-DMZ multiple
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 Only 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.

9.2 Configuring NAT

You must create a firewall rule in addition to setting up NAT, to allow traffic from the WAN
to be forwarded through the ZyXEL device.
Select a device and then click Configuration > NAT.
Chapter 9 Configuration > NAT
Note: Port numbers do not change for One-to-One and Many-
One-to-One NAT mapping types.
TYPE
ILA1−> IGA1
ILA2−>IGA1
ILA1−> 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 Server
IP MAPPING
M-1
M-M Ov
M-1-1
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