Editing Internet filter (section)

=== Network-based filtering ===
:This type of filter is implemented at the [[transport layer]] as a [[transparent proxy]], or at the [[application layer]] as a [[proxy server|web proxy]].<ref>{{cite web|url=http://www.websense.com/content/support/library/web/v75/wcg_deploy/WCG_Deploy.1.3.aspx|title=Explicit and Transparent Proxy Deployments|website=[[websense]].com|access-date=30 March 2012|year=2010|url-status=dead|archive-url=https://web.archive.org/web/20120418150020/http://www.websense.com/content/support/library/web/v75/wcg_deploy/WCG_Deploy.1.3.aspx|archive-date=18 April 2012}}</ref> Filtering software may include [[data loss prevention software|data loss prevention]] functionality to filter outbound as well as inbound information. All users are subject to the access policy defined by the institution. The filtering can be customized, so a school district's high school library can have a different filtering profile than the district's junior high school library.