ZyWALL 5 Support Notes
All contents copyright (c) 2006 ZyXEL Communications Corporation.
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Step 3. Using Multiple Global IP addresses for clients and servers (One-to-One, Many-to-One, Server Set
mapping types)
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.
Rule 1 (One-to-One type) to map the FTP Server 1 with ILA1 (192.168.1.10) to IGA1 (200.1.1.1).
Rule 2 (One-to-One type) to map the FTP Server 2 with ILA2 (192.168.1.11) to IGA2 (200.1.1.2).
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