1. Select Port Forwarding/Port Triggering under Advanced in the main menu.
2. From the Service Name list, select the service or game that you will host on your network. If the service does not appear in the list, see the following section, "Adding a Custom Service."
3. In the corresponding Server IP Address fields, enter the last digit of the IP address of your
local computer that will provide this service.
4. To the right of Server IP Address, click Add. The service appears in the list in the screen
To define a service, game, or application that does not appear in the Service Name list, you must first determine which port number or range of numbers is used by the application. You can usually determine this information by contacting the publisher of the application or user groups or newsgroups. When you have the port number information, follow these steps:
Adding a Custom Service.
1. Select Port Forwarding/Port Triggering under Advanced in the main menu.
2. Click Add Service (see Figure 5-1 on page 5-7).The Ports-Custom Services screen displays.
3. In the Service Name field, enter a descriptive name.
4. In the Service Type field, select the protocol. If you are unsure, select TCP/UDP.
5. In the Starting Port field, enter the beginning port number.
• If the application uses only a single port, enter the same port number in the Ending Port
field.
• If the application uses a range of ports, enter the ending port number of the range in the
Ending Port field.
6. In the Server IP Address field, enter the IP address of your local computer that will provide
this service.
7. Click Apply.
See the rest of the manual here.
http://documentation.netgear.com/wnr2000/enu/202-10397-01/pdfs/FullManual.pdf
