Multiple Servers Behind Sua - ZyXEL Communications Prestige 128 Plus User Manual

Prestige 128+ ISDN Router
usage is charged to the company instead of the employees, and your accounting
department can avoid the hassles of accountability and reimbursement.
8.5

Multiple Servers behind SUA

If you wish, you can make inside servers for different services, e.g., web or FTP,
visible to the outside users, even though SUA makes your whole inside network
appear as a single machine to the outside world. A service is identified by the
port number, e.g., web service is on port 80 and FTP on port 21.
As an example, if you have a web server at 192.168.1.2 and an FTP server
192.168.1.3, then you need to specify for port 80 (web) the server at IP address
192.168.1.2 and for port 21 (FTP) another at IP address 192.168.1.3.
Please note that a server can support more than one service, e.g., a server can
provide both FTP and DNS service, while another provides only web service.
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.
To make a server visible to the outside world, specify the port number of the
service and the inside IP address of the server in Menu 15, Multiple Server
Configuration.
8.5.1 Configuring a Server behind SUA
Follow the steps below to configure a server behind SUA:
1. Enter 15 in the main menu to go to menu 15, Multiple Server Configuration.
8-12 Dial-In Server Configuration