Internet Community Ports Act
The Internet Community Ports Act (ICPA),[1] created and advocated by The CP80 Foundation (aka "Clean Port 80"), [2] is an approach to HTTP content filtering, leveraging Transmission Control Protocol ports to segregate content between "Community Ports" and "Open Ports." "Community Ports" would be for content that is not considered "obscene or harmful" to children; "Open Ports" would be for all other content, including content only considered suitable for adults, such as pornography. According to the advocates of ICPA, this would enable an individual to, through their ISP's firewall, choose the content they want by port, allowing content or blocking out content individually.
Source: Wikipedia — Internet Community Ports Act (CC BY-SA 4.0)