Internet UDP port 69 is primarily used by the Trivial File Transfer Protocol (TFTP). TFTP is a simple, lock-step, file transfer protocol which allows a client to get or put a file onto a remote host. One of its primary uses is in the early stages of nodes booting from a Local Area Network. Examples of software that use this port are tftpd, a server for TFTP, and atftpd, an advanced TFTP server.
UDP port 69 is primarily used for Trivial File Transfer Protocol (TFTP), a simple protocol to transfer files. In the past, hackers have exploited this port to launch amplification attacks, where a small request generates a large response, overwhelming the target system. They have also used it to transfer malicious files or scripts onto vulnerable systems. Additionally, since TFTP lacks security features such as authentication or encryption, hackers can intercept the data transferred via this port. In some instances, hackers have exploited misconfigured TFTP servers to gain unauthorized access to a network.
