IP blocking is the banning, by a website, mail server, or other Internet server, of outside connections from certain IP addresses or ranges of them, the intention of this being to keep out people who are judged as hostile or undesirable.
One such example of this is the July 2003 decision by techfocus.org to ban the Recording Industry Association of America (RIAA) and Motion Picture Association of America from its website for various abuses by those two organizations of the content on it. On an Internet forum an IP ban is often used as a last resort to prevent a disruptive member from participating, though a warning and/or account ban may be used first.
IP banning is used by Indymedia administrators. It has been alleged that they abuse that power to exclude points of view which differ from that of administrators.
IP banning is commonly used on computer servers to protect against brute force attacks. Both companies and schools offering remote user access, and people wanting to access their home computers from remote locations, use Linux programs such as Deny Hosts or Fail2ban for protection from unauthorized access while allowing permitted remote access. IP Blocking of the show time website for non-US origin IP banning is also used to limit the syndication of content to a specific region. To achieve this IP-addresses are mapped to the countries they have been assigned to.
An operating system (OS) is a set of computer programs that manage the hardware and software resources of a computer. An operating system processes raw system and user input and responds by allocating and managing tasks and internal system resources as a service to users and programs of the system. At the foundation of all system software, an operating system performs basic tasks such as controlling and allocating memory, prioritizing system requests, controlling input and output devices, facilitating networking and managing file systems. Most operating systems come with an application that...