While doing a technical assessment to determine network vulnerabilities, you used the TCP XMAS scan. What would be the response of all open ports?
A. The port will send an ACK
B. The port will send a SYN
C. The port will ignore the packets
D. The port will send an RST
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answer is C
If a port is closed, the target system will respond with a RST packet, indicating that the connection attempt was rejected. However, if a port is open, the target system may not send any response at all, or it may respond with a packet with various combinations of flags set or unset.
Its C
response is C
“The RFC 793 expected behavior is that any TCP segment with an out-of-state Flag sent to an open port is discarded, whereas segments with out-of-state flags sent to closed ports should be handled with a RST in response. This behavior should allow an attacker to scan for closed ports by sending certain types of rule-breaking packets (out of sync or disallowed by the TCB) and detect closed ports via RST packets”
Ok, I’m done here, too many incorrect answers provided by this system.
which other website did you go then ?
C. XMAS is a type of inverse tcp scan.
C
C. The port will ignore the packets
C is correct. No response if port is open.
I agree with both NA and AL. Answer is C.
Agree with NA, correct answer should be C, no response if the port is open
Wrong. Correct answer is C. in XMAS scan the packets are ignored if the port is open.