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Improved detection of TCP scanners

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This commit is contained in:
Luca Deri 2025-05-27 22:17:38 +02:00
parent 1f5378efb8
commit 9e5a67f369
9 changed files with 93 additions and 47 deletions
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6
tests/cfgs/default/result/smtp.pcap.out
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@ -11,9 +11,9 @@ LRU cache fpc_dns: 0/1/0 (insert/search/found)
Automa host: 1/0 (search/found)
Automa domain: 1/0 (search/found)
Automa tls cert: 0/0 (search/found)
Automa risk mask: 0/0 (search/found)
Automa risk mask: 1/0 (search/found)
Automa common alpns: 0/0 (search/found)
Patricia risk mask: 0/0 (search/found)
Patricia risk mask: 2/0 (search/found)
Patricia risk mask IPv6: 0/0 (search/found)
Patricia risk: 0/0 (search/found)
Patricia risk IPv6: 0/0 (search/found)
@ -24,4 +24,4 @@ SMTP 95 23157 1
Acceptable 95 23157 1
1 TCP 194.7.248.153:2127 <-> 172.16.114.207:25 [proto: 3/SMTP][IP: 0/Unknown][ClearText][Confidence: DPI][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 11][cat: Email/3][51 pkts/19311 bytes <-> 44 pkts/3846 bytes][Goodput ratio: 86/37][0.23 sec][Hostname/SNI: pigeon.eyrie.af.mil][bytes ratio: 0.668 (Upload)][IAT c2s/s2c min/avg/max/stddev: 1/1 5/6 67/68 12/15][Pkt Len c2s/s2c min/avg/max/stddev: 60/60 379/87 1514/138 562/15][TCP Fingerprint: 2_64_512_6bbe28597824/Unknown][PLAIN TEXT (220 pigeon.eyrie.af.mil ESMTP S)][Plen Bins: 8,78,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,1,0,0,0,0,0,0,0,0,0,0,10,0,0]
1 TCP 194.7.248.153:2127 <-> 172.16.114.207:25 [proto: 3/SMTP][IP: 0/Unknown][ClearText][Confidence: DPI][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 11][cat: Email/3][51 pkts/19311 bytes <-> 44 pkts/3846 bytes][Goodput ratio: 86/37][0.23 sec][Hostname/SNI: pigeon.eyrie.af.mil][bytes ratio: 0.668 (Upload)][IAT c2s/s2c min/avg/max/stddev: 1/1 5/6 67/68 12/15][Pkt Len c2s/s2c min/avg/max/stddev: 60/60 379/87 1514/138 562/15][Risk: ** Malicious Fingerpint **][Risk Score: 100][Risk Info: Unusual TCP fingerprint (scanner detected?)][TCP Fingerprint: 2_64_512_6bbe28597824/Unknown][PLAIN TEXT (220 pigeon.eyrie.af.mil ESMTP S)][Plen Bins: 8,78,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,1,0,0,0,0,0,0,0,0,0,0,10,0,0]