What Ip/Port Mapping Does Multi-Nat Support - ZyXEL Communications P-660RU-Tx Series Support Notes

(Full Feature), you can make multiple local servers (mapping the same port or not)
on the LAN accessible from outside with multiple global IP addresses.

Support Non-NAT Friendly Applications
Some servers providing Internet applications such as some MIRC servers do
not allow users to login using the same IP address. Thus, users on the same
network can not login to the same server simultaneously. In this case it is
better to use Many-to-Many No Overload or One-to-One NAT mapping types,
thus each user login to the server using a unique global IP address.

10. What IP/Port mapping does Multi-NAT support?

There is a Virtual Server column in Advanced Setup-> NAT. We can
configure a IP/Port mapping table there.
Multi-NAT supports five types of IP/port mapping: One to One, Many to One,
Many to Many Overload, Many to Many No Overload and Server. The details of
the mapping between ILA and IGA are described as below. Here we define the
local IP addresses as the Internal Local Addresses (ILA) and the global IP
addresses as the Inside Global Address (IGA),

One to One: In One-to-One mode, the P-660RU-Tx maps one ILA to one
IGA.

Many to One: In Many-to-One mode, the P-660RU-Tx maps multiple ILA
to one IGA. This is equivalent to SUA (i.e., PAT, port address translation).

Many to Many Overload: In Many-to-Many Overload mode, the
P-660RU-Tx maps the multiple ILA to shared IGA.

Many One-to-One: In Many One-to-One mode, the P-660RU-Tx
maps each ILA to unique IGA.

Server: In Server mode, the P-660RU-Tx 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 that if you want to map
each server to one unique IGA please use the One -to-One mode.
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P-660RU-Tx Series Support Note s
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