Step 1.
Step 2.
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NAT

Prestige 1600 Universal Access Concentrator

9.3NAT Server Sets

A NAT server set is a list of inside servers (behind NAT on the LAN) that you can make visible to the outside world. Menu 15.2 - NAT Server Sets is used to configure these servers.

9.3.1Multiple Servers behind NAT

If you wish, you can make inside servers for different services, e.g., web or FTP, visible to the outside users, even though NAT 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 (see the following figure), if you have a web server at 192.168.1.36 and an FTP server 192.168.1.33, then you need to specify for port 80 (web) the server at IP address 192.168.1.36 and for port 21 (FTP) another at IP address 192.168.1.33.

Please note that a server machine can support more than one service, e.g., a machine can provide both FTP and DNS service, while another provides only web service.

Figure 9-9 Multiple Servers Behind NAT

9.3.2Configuring Inside Servers

Follow the steps below to configure a server behind NAT:

Enter 15 in the main menu to go to Menu 15 - NAT Setup. Enter 2 to go to Menu 15.2 - NAT Server Sets.

Enter the service port number in the Port # field and the inside IP address of the server in the IP Address field.

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