Day 7.
What is missing from a half-open scan?
- FIN
- SYN-ACK
- ACK
- SYN
- RST
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ACK (the last ACK)
- SYN-ACK
ACK
In an half-scan, what is missing is last ACK.
It’s used to avoid logging on scanned device by interrupting TCP handshake.
On nmap is “-sS” and it’s the default scan.
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