NETGEAR DGND3300 user manual V1.0, March

RangeMax Dual Band Wireless-N Modem Router DGND3300 User Manual

To block access to Internet services:

1.Select Services under Security in the main menu. The Services screen displays.

Figure 3-6

2.To add a service, click Add Custom Service. The following screen displays.

Figure 3-7

3.Enter a name for the service.

4.From the Service Type drop-down list, select the application or service to be allowed or blocked. If you know that the application uses either TCP or UDP, select the appropriate protocol. If you are not sure, select Both.

5.You can block the specified service for a single computer, a range of computers with consecutive IP addresses, or all computers on your network. Enter the starting port and ending port numbers. If the application uses a single port number, enter that number in both fields.

You must determine which port number or range of numbers is used by the application. The service port numbers for many common protocols are defined by the Internet Engineering Task Force (IETF) and published in RFC1700, “Assigned Numbers.” Service numbers for other applications are typically chosen from the range 1024 to 65535 by the authors of the application. You can often determine port number information by contacting the publisher of the application, by asking user groups or newsgroups, or by searching.

6.Click Apply so that your changes take effect.

Protecting Your Network 3-9

v1.0, March 2009