Network IP cameras connect to a computer network. They each have network addresses, and act as video servers on the network. This allows a user to view the video from any computer equipped with a web browser such as Internet Explorer. No special cables are required; network cameras can plug in to any computer jack available on the local network. Surveillance can thus be handled remotely from anywhere in the world, so long as a user knows the IP address of the camera.  Numerous protocols are used depending on the make and model of the camera, including TCP/IP, HTTP, and FTP.