What does the -p option specify in hping3 command syntax?

What does the -p option specify in hping3 command syntax?

• A. Destination port
• B. Source port
• C. Sequence number
• D. IP ID

Answer: (A)

In hping3, you craft packets for a specific destination service, and the destination port tells the remote host which service to deliver the data to. The -p option sets that destination port in the transport-layer header. This is the port on the target machine that the service you want to test is listening on (for example, 80 for HTTP or 443 for HTTPS). The counterpart is the source port, which is the port on your side used for the reply path and is set with -s. So, when you want to probe whether a service on a given port is reachable, you specify that port with -p and often combine it with flags like SYN to test reachability. Keep in mind that ports don’t exist in ICMP packets, so -p doesn’t apply there.

In hping3, you craft packets for a specific destination service, and the destination port tells the remote host which service to deliver the data to. The -p option sets that destination port in the transport-layer header. This is the port on the target machine that the service you want to test is listening on (for example, 80 for HTTP or 443 for HTTPS). The counterpart is the source port, which is the port on your side used for the reply path and is set with -s. So, when you want to probe whether a service on a given port is reachable, you specify that port with -p and often combine it with flags like SYN to test reachability. Keep in mind that ports don’t exist in ICMP packets, so -p doesn’t apply there.