Definition Edit

The File Transfer Protocol (FTP) is a standard high-level protocol that allows a user to log onto a remote computer, and retrieve text, graphics, audio, or computer program files, and transfer the desired files back to its computer. The FTP allows computers connected to the Internet to exchange files, regardless of the computer platform.

How it works Edit

FTP is based on a client-server model. Any computer can act as either a client or a server. FTP sites can be configured to allow an anonymous connection or require a user name and password. Some common FTP client programs include Web browsers, WS-FTP (Light Edition & Pro), War FTP Daemon, CuteFTP, BulletProof FTP, and FTP Voyager. The client-server model is similar to a central file cabinet in an office where people can access documents.

FTP uses two ports — data is transferred on port 20, while control information is exchanged on port 21.