Blocking access to unwanted web sites and content can be described as a number of things such as web filtering, content filtering and information filtering. There are a number of software programmes on the market today that filter web site requests before delivering you to the web site. This web filtering is mainly used within businesses and corporations as well as schools and by parents in the home, all of which is done with good reason.
In the World Wide Web today there are over 4.2 million active pornography sites and countless indecent sites which encourage violent behaviour and contain malicious content. All of this content is indecent to children and numerous working hours are lost every day due to employees browsing such sites.