ZyXEL Communications Prestige 643 - Manual (Page 59)

Prestige 643 ADSL Router
Internet Access 3-17
Table 3-6 Single User Account Menu Fields
FIELD DESCRIPTION EXAMPLE
Single User Account Choose Yes to enable and No to disable SUA. Yes
IP Address Assignment Choose either Dynamic or Static. If you have a static IP
Address, enter it in dotted decimal notation into the IP
Address field. If you have a dynamic IP Address, the IP
Address field will be N/A. Dynamic
IP Address Enter your IP Address here in dotted decimal notation if
you have a static IP. If you have a dynamic IP address
then the field becomes N/A.
N/A
Press [ ENTER ] at the message “Press ENTER to confirm...” to save your configuration or press [ ESC ]
at any time to cancel.
3.15 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 a FTP server 192.168.1.3, then you need to
specify port 80 (web) to the server at IP address 192.168.1.2 and port 21 (FTP) for the FTP server
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. Furthermore, 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 – SUA Server Setup.