File Transfer Protocol (FTP) is a standard network protocol used to transfer files between a client and a server over a computer network, such as the internet. FTP allows users to upload, download, delete, rename, move, and copy files on a server. While FTP is widely used for website management and file sharing, it transmits data in plain text, making it vulnerable to interception and attacks. Secure alternatives, like FTPS and SFTP, are recommended for sensitive data transfers. FTP operates on a client-server model and typically uses ports 20 and 21 for communication.