#alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET SCAN NMAP -sA (2)"; fragbits:!D; dsize:0; flags:A,12; window:3072; threshold: type both, track by_dst, count 1, seconds 60; reference:url,doc.emergingthreats.net/2000540; classtype:attempted-recon; sid:2000540; rev:8; metadata:created_at 2010_07_30, updated_at 2010_07_30;)

Added 2018-09-13 19:37:07 UTC

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Added 2018-09-13 17:52:21 UTC

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#alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET SCAN NMAP -sA (2)"; fragbits:!D; dsize:0; flags:A,12; window:3072; threshold: type both, track by_dst, count 1, seconds 60; reference:url,doc.emergingthreats.net/2000540; classtype:attempted-recon; sid:2000540; rev:8; metadata:created_at 2010_07_30, updated_at 2010_07_30;)

Added 2017-08-07 20:55:14 UTC

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#alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET SCAN NMAP -sA (2)"; fragbits:!D; dsize:0; flags:A,12; window:3072; threshold: type both, track by_dst, count 1, seconds 60; reference:url,doc.emergingthreats.net/2000540; classtype:attempted-recon; sid:2000540; rev:8;)

Added 2011-10-12 19:09:40 UTC

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#alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET SCAN NMAP -sA (2)"; fragbits:!D; dsize:0; flags:A,12; window:3072; threshold: type both, track by_dst, count 1, seconds 60; classtype:attempted-recon; reference:url,doc.emergingthreats.net/2000540; sid:2000540; rev:8;)

Added 2011-09-15 14:46:15 UTC

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#alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET SCAN NMAP -sA (2)"; fragbits:!D; dsize:0; flags:A,12; window:3072; threshold: type both, track by_dst, count 1, seconds 60; classtype:attempted-recon; reference:url,doc.emergingthreats.net/2000540; sid:2000540; rev:8;)

Added 2011-09-14 20:37:11 UTC

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#alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET SCAN NMAP -sA (2)"; fragbits:!D; dsize:0; flags:A,12; window:3072; threshold: type both, track by_dst, count 1, seconds 60; classtype:attempted-recon; reference:url,doc.emergingthreats.net/2000540; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/SCAN/SCAN_NMAP; sid:2000540; rev:8;)

Added 2011-02-04 17:21:15 UTC

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alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET SCAN NMAP -sA (2)"; fragbits:!D; dsize:0; flags:A,12; window:3072; threshold: type both, track by_dst, count 1, seconds 60; classtype:attempted-recon; reference:url,doc.emergingthreats.net/2000540; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/SCAN/SCAN_NMAP; sid:2000540; rev:8;)

Added 2010-04-26 10:34:58 UTC

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alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET SCAN NMAP -sA (2)"; fragbits:!D; dsize:0; flags:A,12; window:3072; threshold: type both, track by_dst, count 1, seconds 60; classtype:attempted-recon; reference:url,doc.emergingthreats.net/2000540; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/SCAN/SCAN_NMAP; sid:2000540; rev:8;)

Added 2010-04-26 10:34:58 UTC

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alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET SCAN NMAP -sA (2)"; fragbits:!D; dsize:0; flags:A,12; window:3072; classtype:attempted-recon; reference:url,doc.emergingthreats.net/2000540; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/SCAN/SCAN_NMAP; sid:2000540; rev:7;)

Added 2009-07-14 13:39:11 UTC

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alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET SCAN NMAP -sA (2)"; fragbits:!D; dsize:0; flags:A,12; window:3072; classtype:attempted-recon; reference:url,doc.emergingthreats.net/2000540; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/SCAN/SCAN_NMAP; sid:2000540; rev:7;)

Added 2009-07-14 13:39:11 UTC

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alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET SCAN NMAP -sA (2)"; fragbits: D; dsize: 0; flags: A,12; window: 3072; classtype: attempted-recon; reference:url,doc.emergingthreats.net/2000540; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/SCAN/SCAN_NMAP; sid: 2000540; rev:7;)

Added 2009-02-12 18:21:19 UTC

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alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET SCAN NMAP -sA (2)"; fragbits: D; dsize: 0; flags: A,12; window: 3072; classtype: attempted-recon; reference:url,doc.emergingthreats.net/2000540; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/SCAN/SCAN_NMAP; sid: 2000540; rev:7;)

Added 2009-02-12 18:21:19 UTC

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alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET SCAN NMAP -sA (2)"; fragbits: D; dsize: 0; flags: A,12; window: 3072; classtype: attempted-recon; sid: 2000540; rev:6;)

Added 2008-11-11 21:00:22 UTC

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alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET SCAN NMAP -sA (2)"; fragbits: D; dsize: 0; flags: A,12; window: 3072; classtype: attempted-recon; sid: 2000540; rev:6;)

Added 2008-11-11 21:00:22 UTC

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alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET SCAN NMAP -sA (2)"; fragbits: D; dsize: 0; flags: A,12; window: 3072; reference:arachnids,162; classtype: attempted-recon; sid: 2000540; rev:5;)

Added 2008-01-29 10:56:40 UTC

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alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET SCAN NMAP -sA (2)"; fragbits: D; dsize: 0; flags: A,12; window: 3072; reference:arachnids,162; classtype: attempted-recon; sid: 2000540; rev:5;)

Added 2008-01-29 10:56:40 UTC

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alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg: "BLEEDING-EDGE SCAN NMAP -sA (2)"; fragbits: D; dsize: 0; flags: A,12; window: 3072; reference:arachnids,162; classtype: attempted-recon; sid: 2000540; rev:4; )

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