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Chapter 17 Network Address Translation (NAT)
ZyWALL 2 Plus User’s Guide
313
The following table summarizes the NAT mapping types.
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.
Table 92 NAT Mapping Types
TYPE IP MAPPING SMT ABBREVIATION
One-to-One ILA1 IJ IGA1 1-1
Many-to-One (SUA/PAT) ILA1 IJ IGA1
ILA2 IJ IGA1
…
M-1
Many-to-Many Overload ILA IJ IGA1
ILA2 IJ IGA2
ILA3 IJ IGA1
ILA4 IJ IGA2
…
M-M Ov
Many-One-to-One ILA1 IJ IGA1
ILA2 IJ IGA2
ILA3 IJ IGA3
…
M-1-1
Server Server 1 IP IJ IGA1
Server 2 IP IJ IGA1
Server 3 IP IJ IGA1
Server