ZyXEL Communications NBG410W3G Series - Manual (Page 34)

NBG410W3G Support Note
All contents copyright (c) 2008 ZyXEL Communications Corporation.
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In Many-to-Many Overload mode, the NBG410W3G maps the multiple ILA to shared IGA.
4. Many One to One
In Many One to One, the NBG410W3G maps each ILA to unique IGA.
5. Server
In Server mode, the NBG410W3G maps multiple inside servers to one global IP address. This allows us
to specify multiple servers of different types behind the NAT for outside access. Note, if you want to map
each server to one unique IGA please use the One-to-One mode.
The following table summarizes these types.
NAT Type IP Mapping
One-to-One ILA1<--->IGA1
Many-to-One
(SUA/PAT)
ILA1<--->IGA1
ILA2<--->IGA1
...
Many-to-Many
Overload
ILA1<--->IGA1
ILA2<--->IGA2
ILA3<--->IGA1
ILA4<--->IGA2
...
Many One-to-One
ILA1<--->IGA1
ILA2<--->IGA2
ILA3<--->IGA3
ILA4<--->IGA4
...
Server
Server 1 IP<--->IGA1
Server 2 IP<--->IGA1
• SUA Versus Multi-NAT
SUA (Single User Account), if you get only one public IP address from your ISP, then you should use SUA.
With SUA, PCs on NBG410W3G's LAN side can access Internet without further configuration. If you have
internal servers to be accessed by remote users on Internet, you need to go to ADVANCED -> SUA/NAT ->
SUA Server to setup which service, or port numbers, you would like to forward to which internal server.
Multi-NAT, if you get multiple public IP addresses from your ISP, then you may use Multi-NAT. With
Multi-NAT, you can choose different types of NAT mapping methods to utilize the public IP addresses. You