ZyXEL Communications P-334WT Support Notes page 89

Introduction
If you wish, you can make internal servers (e.g., Web, ftp or mail server) accessible for outside users, even though SUA
makes your LAN appear as a single machine to the outside world. A service is identified by the port number. Also, since
you need to specify the IP address of a server in the Prestige, a server must have a fixed IP address and not be a DHCP
client whose IP address potentially changes each time it is powered on.
In addition to the servers for specific services, SUA supports a default server. A service request that does not have a server
explicitly designated for it is forwarded to the default server. If the default server is not defined, the service request is
simply discarded.
Configuration
To make a server visible to the outside world, specify the port number of the service and the inside address of the server in
'Menu 15', Multiple Server Configuration. The outside users can access the local server using the Prestige's
address which can be obtained from menu 24.1.
For example (Configuring an internal Web server for outside access) :
Configure an Internal Server Behind SUA
WAN IP