Which of the following scanning technique attackers use to bypass firewall rules, logging mechanism, and hide themselves as usual network traffic?

Stealth scanning technique

TCP connect scanning technique

Xmas scanning technique

Maintaining Access

FIN scanning technique

Answer: Stealth scanning technique

Explanation:

Stealth scanning technique consist of the following types of scans:

1. FIN scan

2. X - MAS tree scan

3. NULL scan

The FIN scan responds by considering port open if response in received for its packet sent with the fin flag else considered closed.

The X-MAS tree scan fires up by setting a TCP packet with URG, PUSH, FIN flags and the port is considered open if no response.

NULL scans sends null packet and considers it to be an open port.

Stealth scanning techniques considers to get some response from the network with out actually using a handshaking and is used to bypass firewall rules, logging mechanism, and hide themselves as usual network traffic.