Application software used to prevent access to certain Web servers, such as by parents who do not want their children to access pornography. (See: filter, guard.)
Application software used to prevent access to certain Web servers, such as by parents who do not want their children to access pornography. (See: filter, guard.)
Tutorial: The filter is usually browser-based, but could be part of an intermediate cache server. The two basic content filtering techniques are (a) to block a specified list of URLs and (b) to block material that contains specified words and phrases.