ZyXEL Communications Prestige 2302RL Support Notes page 34

In this case we have 3 IGAs (IGA1, IGA2 and IGA3) from the ISP. We have two very busy internal FTP
servers and also an internal general server for the web and mail. In this case, we want to assign the 3 IGAs by
the following way using 4 NAT rules.
5. Rule 1 (One-to-One type) to map the FTP Server 1 with ILA1 (192.168.1.10) to IGA1.
6. Rule 2 (One-to-One type) to map the FTP Server 2 with ILA2 (192.168.1.11) to IGA2.
7. Rule 3 (Many-to-One type) to map the other clients to IGA3.
8. Rule 4 (Server type) to map a web server and mail server with ILA3 (192.168.1.20) to IGA3. Type
Server allows us to specify multiple servers, of different types, to other machines behind NAT on
the LAN.
Step 1:
In this case, we need to configure Address Mapping Set 1 from Menu 15.1-Address Mapping Sets. Therefore
we must choose the Full Feature option from the NAT field in menu 4 or menu 11.3, and assign IGA3 to
Prestige WAN IP Address.
All contents copyright (c) 2007 ZyXEL Communications Corporation.
Prestige 2302RL Support Notes
34