How does a SYN scan differ from a TCP connect scan in stealth scanning through a firewall?Select one:a.A SYN scan sends a SYN packet to the target port and waits for a response, while a TCP connect scan establishes a full TCP connection.b.A SYN scan sends a SYN packet to the target port and waits for a response, while a TCP connect scan sends a FIN packet to the target port and waits for a response.c.A SYN scan sends a FIN packet to the target port and waits for a response, while a TCP connect scan sends a SYN packet to the target port and waits for a response.d.A SYN scan establishes a full TCP connection, while a TCP connect scan sends a SYN packet to the target port and waits for a response.
Question
How does a SYN scan differ from a TCP connect scan in stealth scanning through a firewall?Select one:a.A SYN scan sends a SYN packet to the target port and waits for a response, while a TCP connect scan establishes a full TCP connection.b.A SYN scan sends a SYN packet to the target port and waits for a response, while a TCP connect scan sends a FIN packet to the target port and waits for a response.c.A SYN scan sends a FIN packet to the target port and waits for a response, while a TCP connect scan sends a SYN packet to the target port and waits for a response.d.A SYN scan establishes a full TCP connection, while a TCP connect scan sends a SYN packet to the target port and waits for a response.
Solution
The correct answer is a. A SYN scan sends a SYN packet to the target port and waits for a response, while a TCP connect scan establishes a full TCP connection. This is because a SYN scan, also known as a half-open scan, is a type of stealth scanning technique that only sends a SYN packet and waits for a response, without completing the TCP handshake. On the other hand, a TCP connect scan establishes a full TCP connection, completing the three-way handshake, which makes it more detectable.
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