ZyXEL Communications NBG410W3G Series - Manual (Page 38)

NBG410W3G Support Note
All contents copyright (c) 2008 ZyXEL Communications Corporation.
38
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.
ƒ Rule 1 (One-to-One type) to map the FTP Server 1 with ILA1 (192.168.1.10) to IGA1 (200.1.1.1).
ƒ Rule 2 (One-to-One type) to map the FTP Server 2 with ILA2 (192.168.1.11) to IGA2 (200.1.1.2).
ƒ Rule 3 (Many-to-One type) to map the other clients to IGA3 (200.1.1.3).
ƒ 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.
Rule 1 Setup: Select One-to-One type to map the FTP Server 1 with ILA1 (192.168.1.10) to IGA1 (200.1.1.1).
Rule 2 Setup: Selecting One-to -One type to map the FTP Server 2 with ILA2 (192.168.1.11) to IGA2
(200.1.1.2).
Rule 3 Setup: Select Many-to-One type to map the other clients to IGA3.