Question

You need to prevent the use of TFTP through your firewall. Which port would you block?

A) TCP 69
B) UDP 69
C) TCP 21
D) UDP 21.

Answer 1

To block TFTP through a firewall, you should block UDP 69, as TFTP uses that port for its file transfer services.

Step-by-step explanation:

To prevent the use of TFTP (Trivial File Transfer Protocol) through your firewall, you would block UDP 69. TFTP uses the User Datagram Protocol (UDP) on port number 69 for its file transfer services. Unlike FTP that uses TCP, TFTP is less complex and doesn't establish a connection before sending data, making it faster but less reliable for transferring files. Blocking this port will effectively stop TFTP traffic from traversing through your firewall.