Information
Trivial File Transfer Protocol (TFTP) is a simple file transfer protocol, typically used to automatically transfer configuration or boot machines from a boot server. The packages tftp and atftp are both used to define and support a TFTP server. TFTP does not support authentication nor does it ensure the confidentiality or integrity of data. It is recommended that TFTP be removed, unless there is a specific need for TFTP. In that case, extreme caution must be used when configuring the services.
Solution
Comment out or remove any lines starting with tftp from /etc/inetd.conf and /etc/inetd.d/*. Set disable = yes on all tftp services in /etc/xinetd.conf and /etc/xinetd.d/*.