Netgear DGND3300 User Manual download pdf (Page 45)

Chapter 3. Security Settings | 45

N300 Wireless Dual Band ADSL2+ Modem Router DGND3300v2 User Manual

To block access to Internet services:

1. From the main menu, select Security > Services. The Services screen displays.

Figure 26.

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

Figure 27.

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.

Scheduling Blocking

To schedule blocking:

1. From the main menu, select Security > Schedule. The Schedule screen displays.

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Netgear DGND3300 User Manual Page 45