Prestige 201 ISDN Access Router
3-12 Internet Access
Table 3-5 Single User Account Menu Fields
Field Description
Single User Account Select Yes to enable SUA.
IP Addr. If your ISP did not assign you a static IP address, enter
[0.0.0.0] here; otherwise, enter that IP address here.
Press [Enter] at the message [Press ENTER to Confirm ...] to save your configuration, or
press [Esc] at any time to cancel.
At this point, your Prestige will ask if you wish to test the Internet connection. If you select Yes, the Prestige
will call the ISP and test the configuration. If the test fails, note the error messages on the screen and take the
appropriate troubleshooting steps.
3.6 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 - SUA Server Setup.
3.6.1 Configuring a Server behind SUA
Follow the steps below to configure a server behind SUA:
