An attacker is trying to check a target's ports status. The attacker sent a SYN packet and receiveda SYN/ACK as response. Later the attacker sent a RST to close the session. a. Identify the type of scan performed by the attacker. (1 Mark) b. What is the status of the port which he scanned? (1 Mark) c. Write any two techniques to defend such scanning attempts. (1 Mark)