ZyXEL Communications Prestige 641, Руководство пользователя, Страница: 47 / 117

Prestige 641 ADSL Internet Access Router
Internet Access
3-13
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.
3.11 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.
3.11.1 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.
2. Enter an index number in menu 15 to go to Menu 15.1 - SUA Server Configuration.
3. Enter the service port number in the Port # field and the inside IP address of the server in the IP
Address field.
4. Press ENTER at the “Press ENTER to confirm …” prompt to save your configuration after you
define all the servers or press
ESC
at any time to cancel.