A TCP SYN flood attack uses the three-way handshake mechanism. The attacker at system A sends a SYN packet to the victim at system B. System B responds by sending a SYN/ACK packet to the attacker at system A. System A does not reply to system B, leaving victim B hung waiting for a response. Which of the following best describes the status of victim B?

The victim B is under attack.

Step-by-step explanation:

This scenerio is know as the TCP Half open scan. The attacker send to SYN packet to the victim just to know if a port is open.

A TCP Half Open Scan also referred to as SYN scanning determines if a port is open by performing the first half of a three-way handshake.

Attacker is trying to have TCP connection to a server through any port, this is done by sending a SYN (synchronization) packet, as if to initiate a three-way handshake, to every port on the server.

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