Which hping3 command performs a UDP scan on port 80?

• A. hping3 -1 10.0.0.25
• B. hping3 -A 10.0.0.25 -p 80
• C. hping3 -2 10.0.0.25 -p 80
• D. hping3 192.168.1.103 -Q -p 139 -s

Answer: (C)

To perform a UDP scan, you must run hping3 in UDP mode and target a specific port. The UDP mode is selected with the -2 flag, and the destination port is specified with -p. In this case, sending UDP packets to port 80 on 10.0.0.25 is accomplished with the command that uses -2 to activate UDP mode and -p 80 to set the target port. This is the only approach among the options that explicitly uses UDP scanning rather than ICMP or TCP probes. The other patterns correspond to ICMP ping (-1), a TCP ACK scan (-A), or other flags that don’t perform a UDP scan, so they won’t test UDP port 80.