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Full (TCP Connect), initial flag sent |
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Half Open (Stealth / SYN Scan), initial flag sent |
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Full (TCP Connect), Open Port Response |
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Half Open (Stealth / SYN Scan), Open Port Response |
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Full (TCP Connect), Closed Port Response |
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Half Open (Stealth / SYN Scan), Closed Port Response |
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XMAS, Closed Port Response |
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FIN, Closed Port Response |
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NULL, Closed Port Response |
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ACK, Closed Port Response |
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Term
Full (TCP Connect), special characteristic |
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Definition
Noisiest but most reliable. |
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Term
Half Open (Stealth / SYN Scan), special characteristic |
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Definition
No completion of three way handshake. Designed for stealth but may be picked up on IDS sensors. |
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Term
XMAS, special characteristic |
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Definition
Does not work on Windows Machines |
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FIN, special characteristic |
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Definition
Does not work on Windows Machines |
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NULL, special characteristic |
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Definition
Does not work on Windows Machines |
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ACK, special characteristic |
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Definition
Used in firewall filter tests |
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