Answer :
Final answer:
UDP port 69 should be blocked to restrict TFTP traffic.
Explanation:
To block TFTP traffic to a server, you need to block UDP port 69. TFTP (Trivial File Transfer Protocol) uses UDP port 69 for communication. Therefore, blocking UDP port 69 will prevent TFTP traffic from reaching the server.
TFTP uses UDP as its transport protocol. A transfer request is always initiated targeting port 69, but the data transfer ports are chosen independently by the sender and receiver during the transfer initialization.
TFTP is a simple protocol for transferring files, implemented on top of the UDP/IP protocols using well-known port number 69. TFTP was designed to be small and easy to implement, and therefore it lacks most of the advanced features offered by more robust file transfer protocols.
