Reference Manual for the 54 Mbps Wall-Plugged Wireless Range Extender WGX102
Content Filtering in Router Mode 7-3
September 2004 202-10042-01
Blocking Access to Internet Services
The WGX102 Wall-Plugged Range Extender allows you to block the use of certain Internet
services by PCs on your network. This is called services blocking or port filtering. The Block
Services menu is shown below:
Figure 7-2: Block Services menu
Services are functions performed by server computers at the request of client computers. For
example, 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 enable service blocking, select either Per Schedule or Always, then click Apply. If you want to
block by schedule, be sure that a time period is specified in the Schedule menu.
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