An Internet filter is used to monitor and filter content on the web. Most noted for use by parents, libraries or businesses, filtering Internet content may be desired to minimize the chance of children viewing pornographic materials, violence or chatting with child predators. Generally Internet filters are software-based, but they may also use DNS, or Domain Name System, to act as a web gate-keeper. Internet filters are recommended by the FBI (Federal Bureau of Investigation) to help minimize the risk of of children being exposed to predators and online exploiters.http://www.fbi.gov/stats-services/publications/parent-guide/parent-guide

Internet filters may also be referred to as censor-ware, web filtering or content control software. Beyond blocking specific categories of content such as videos, Internet filters can also block a type of website, called phishing websites, designed to gather personal information for illegal purposes. While the software is mostly associated with blocking content for children, the software may be used by libraries to confirm to state or national Internet protection mandates.http://denverlibrary.org/content/internet-filtering-faq Internet filters may also be used by businesses to minimize access to specific types of content such as social media sites.http://www.businessfilters.com/

Filters are offered by different vendors and through different distribution methods. Some Internet Service Providers, or ISPs, provide Internet Filtering services or software as a complementary part of their services.http://www.safefamilies.org/SoftwareTools.php Internet filtering options are also available by selecting DNS services that feature filtering options such as OpenDNS.http://www.opendns.com/familyshield Common software-based solutions include "Net Nanny", "CyberSitter", "SafeEyes" and "SafeFamilies WeBlocker".http://www.safefamilies.org/SoftwareTools.php