P-202H Plus v2 Support Notes
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NAT Mapping Types
NAT supports five types of IP/port mapping. They are:
1.
One to One
In One-to-One mode, the P-202H Plus v2 maps one ILA to one IGA.
2.
Many to One
In Many-to-One mode, the P-202H Plus v2 maps multiple ILA to one IGA.
This is equivalent to SUA (i.e., PAT, port address translation), ZyXEL's
Single User Account feature that previous ZyNOS routers supported (the
SUA only option in today's routers).
3.
Many to Many Overload
In Many-to-Many Overload mode, the P-202H Plus v2 maps the multiple
ILA to shared IGA.
4.
Many to Many No Overload
In Many-to-Many No Overload mode, the P-202H Plus v2 maps each ILA
to unique IGA.
5.
Server
In Server mode, the P-202H Plus v2 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 ILA1<--->IGA1
All contents copyright © 2006 ZyXEL Communications Corporation.
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