Answer: Stealth scanning technique
Explanation:
Stealth Scanning technique includes the following steps:
1. The client upon sending a single SYN packet to is responded by SYN/ACK packet if the port is open.
2. The port is assumed to be in closed state if the RST packe t is sent from the server.
3. This RST packet is sent by the client to close the initiation process so that a connection cannot be established.
