Trivial File Transfer Protocol (TFTP) is a very simple file transfer protocol akin to a basic version of FTP. TFTP is often used to transfer small files between hosts on a network, such as when a remote X Window System terminal or any other thin client boots from a network host or server.

Some details of TFTP;

• Uses UDP (port 69) as its transport protocol (unlike FTP which uses TCP).
• It cannot list directory contents
• No authentication or encryption mechanisms
• Used to write files from/to a remote server

Related topics

• List of well known ports (computing)