Internet filters, also known as a web filter, is a program that determines whether or not all of the incoming Web page should be displayed. What the filter does is it checks the content of a Web page along with a set of rules provided by the person who has installed the Internet filter. Its main purpose is to keep out Web sites that can cause viruses such as pornographic content, spy ware viruses, etc. Some of these internet filter products also include reporting so that the person installing can see what kind of travel is being filtered and who is requesting it.
Certain products of internet filtering allows soft blocking where the administrator is allowed to unlock a page. Even though internet filters do block a certain amount of unwanted Web sites, security experts still suggest other forms of protection. An internet filter is often installed as part of a proxy server and firewall.
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