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The proxy server then fetches the web page from the server on the browser's behalf and passes on the content to the browser. Proxy servers can inspect the data being sent and received and intervene depending on various criteria relating to content of the page or the URL being requested, for example, using a database of banned words or banned URLs.
Companies that make products that selectively block Web sites do not refer to these products as censorware, and prefer terms such as "Internet filter" or "URL Filter"; in the specialized case of software specifically designed to allow parents to monitor and restrict the access of their children, "parental control software" is also used.
Web filtering in schools blocks students from inappropriate and distracting content across the web, while allowing sites that are selected by school administrators. [1] Rather than simply blocking off large portions of the Internet, many schools utilize customizable web filtering systems that provide them with greater control over which sites are allowed and which are blocked.
Blocking may also refer to denying access to a web server based on the IP address of the client machine. [2] In certain websites, including social networks such as Facebook or editable databases like wikis, users can apply blocks (based in either IP number or account) on other users deemed undesirable to prevent them from performing certain ...
Cleanfeed in Australia was a proposed mandatory ISP level content filtration system. It was proposed by the Kim Beazley led Australian Labor Party opposition in a 2006 press release, with the intention of protecting children who were vulnerable to claimed parental computer illiteracy. [6]
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Until now, URLs and websites were blocked using DNS-filtering. This means the DNS of the blocked site was added to a list maintained by the internet service provider and whenever a user tried connecting to that site, the DNS server of the service provider would block that request.