N150 Wireless Router User Manual
Web servers serve Web pages, time servers serve time and date information, and game hosts serve data about other players’ moves. When a computer on your network sends a request for service to a server computer on the Internet, the requested service is identified by a service or port number. This number appears as the destination port number in the transmitted IP packets. For example, a packet that is sent with destination port number 80 is an HTTP (Web server) request.
To block access to Internet services:
1.Select Block Services under Content Filtering in the main menu. The Block Services screen displays.
Figure 2.
2.Enable service blocking by selecting either Per Schedule or Always, and then click Apply.
To block by schedule, be sure to specify a time period in the Schedule screen. For information about scheduling, see Scheduling Blocking on page 44.
3.Specify a service for blocking by clicking Add. The Block Services Setup screen displays.
Figure 3.
4.From the Service Type list, select the application or service to be allowed or blocked. The list already displays several common services, but you are not limited to these choices. To add any additional services or applications that do not already appear, select User Defined.