What type of Port Scanning is this?

Attackers send an ACK probe packet with random sequence number, no response means port is filtered (Stateful firewall is present) and RST response means the port is not filtered. What type of Port Scanning is this?

Attackers send an ACK probe packet with random sequence number, no response means port is filtered (Stateful firewall is present) and RST response means the port is not filtered. What type of Port Scanning is this?

A.
RST flag scanning

B.
FIN flag scanning

C.
SYN flag scanning

D.
ACK flag scanning



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