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Improved detection of TCP scanners

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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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20
tests/cfgs/default/result/zmap.pcap.out
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@ -26,13 +26,13 @@ HTTP 10 540 10
Acceptable 10 540 10
1 TCP 192.168.2.61:36368 -> 192.168.2.237:80 [proto: 7/HTTP][IP: 0/Unknown][ClearText][Confidence: Match by port][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 1][cat: Web/5][1 pkts/54 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Risk: ** Malicious Fingerpint **** Unidirectional Traffic **][Risk Score: 60][Risk Info: No server to client traffic / Massive scanner detected (probably zmap)][TCP Fingerprint: 2_255_65535_e3b0c44298fc/Unknown][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
2 TCP 192.168.2.61:38482 -> 192.168.2.4:80 [proto: 7/HTTP][IP: 0/Unknown][ClearText][Confidence: Match by port][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 1][cat: Web/5][1 pkts/54 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Risk: ** Malicious Fingerpint **** Unidirectional Traffic **][Risk Score: 60][Risk Info: No server to client traffic / Massive scanner detected (probably zmap)][TCP Fingerprint: 2_255_65535_e3b0c44298fc/Unknown][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
3 TCP 192.168.2.61:40049 -> 192.168.2.41:80 [proto: 7/HTTP][IP: 0/Unknown][ClearText][Confidence: Match by port][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 1][cat: Web/5][1 pkts/54 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Risk: ** Malicious Fingerpint **** Unidirectional Traffic **][Risk Score: 60][Risk Info: No server to client traffic / Massive scanner detected (probably zmap)][TCP Fingerprint: 2_255_65535_e3b0c44298fc/Unknown][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
4 TCP 192.168.2.61:42416 -> 192.168.2.65:80 [proto: 7/HTTP][IP: 0/Unknown][ClearText][Confidence: Match by port][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 1][cat: Web/5][1 pkts/54 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Risk: ** Malicious Fingerpint **** Unidirectional Traffic **][Risk Score: 60][Risk Info: No server to client traffic / Massive scanner detected (probably zmap)][TCP Fingerprint: 2_255_65535_e3b0c44298fc/Unknown][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
5 TCP 192.168.2.61:47290 -> 192.168.2.245:80 [proto: 7/HTTP][IP: 0/Unknown][ClearText][Confidence: Match by port][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 1][cat: Web/5][1 pkts/54 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Risk: ** Malicious Fingerpint **** Unidirectional Traffic **][Risk Score: 60][Risk Info: No server to client traffic / Massive scanner detected (probably zmap)][TCP Fingerprint: 2_255_65535_e3b0c44298fc/Unknown][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
6 TCP 192.168.2.61:48731 -> 192.168.2.165:80 [proto: 7/HTTP][IP: 0/Unknown][ClearText][Confidence: Match by port][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 1][cat: Web/5][1 pkts/54 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Risk: ** Malicious Fingerpint **** Unidirectional Traffic **][Risk Score: 60][Risk Info: No server to client traffic / Massive scanner detected (probably zmap)][TCP Fingerprint: 2_255_65535_e3b0c44298fc/Unknown][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
7 TCP 192.168.2.61:49523 -> 192.168.2.215:80 [proto: 7/HTTP][IP: 0/Unknown][ClearText][Confidence: Match by port][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 1][cat: Web/5][1 pkts/54 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Risk: ** Malicious Fingerpint **** Unidirectional Traffic **][Risk Score: 60][Risk Info: No server to client traffic / Massive scanner detected (probably zmap)][TCP Fingerprint: 2_255_65535_e3b0c44298fc/Unknown][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
8 TCP 192.168.2.61:51197 -> 192.168.2.108:80 [proto: 7/HTTP][IP: 0/Unknown][ClearText][Confidence: Match by port][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 1][cat: Web/5][1 pkts/54 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Risk: ** Malicious Fingerpint **** Unidirectional Traffic **][Risk Score: 60][Risk Info: No server to client traffic / Massive scanner detected (probably zmap)][TCP Fingerprint: 2_255_65535_e3b0c44298fc/Unknown][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
9 TCP 192.168.2.61:56788 -> 192.168.2.249:80 [proto: 7/HTTP][IP: 0/Unknown][ClearText][Confidence: Match by port][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 1][cat: Web/5][1 pkts/54 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Risk: ** Malicious Fingerpint **** Unidirectional Traffic **][Risk Score: 60][Risk Info: No server to client traffic / Massive scanner detected (probably zmap)][TCP Fingerprint: 2_255_65535_e3b0c44298fc/Unknown][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
10 TCP 192.168.2.61:57862 -> 192.168.2.50:80 [proto: 7/HTTP][IP: 0/Unknown][ClearText][Confidence: Match by port][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 1][cat: Web/5][1 pkts/54 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Risk: ** Malicious Fingerpint **** Unidirectional Traffic **][Risk Score: 60][Risk Info: No server to client traffic / Massive scanner detected (probably zmap)][TCP Fingerprint: 2_255_65535_e3b0c44298fc/Unknown][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
1 TCP 192.168.2.61:36368 -> 192.168.2.237:80 [proto: 7/HTTP][IP: 0/Unknown][ClearText][Confidence: Match by port][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 1][cat: Web/5][1 pkts/54 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Risk: ** Malicious Fingerpint **** Unidirectional Traffic **][Risk Score: 110][Risk Info: No server to client traffic / Massive scanner detected (probably zmap)][TCP Fingerprint: 2_255_65535_e3b0c44298fc/Unknown][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
2 TCP 192.168.2.61:38482 -> 192.168.2.4:80 [proto: 7/HTTP][IP: 0/Unknown][ClearText][Confidence: Match by port][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 1][cat: Web/5][1 pkts/54 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Risk: ** Malicious Fingerpint **** Unidirectional Traffic **][Risk Score: 110][Risk Info: No server to client traffic / Massive scanner detected (probably zmap)][TCP Fingerprint: 2_255_65535_e3b0c44298fc/Unknown][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
3 TCP 192.168.2.61:40049 -> 192.168.2.41:80 [proto: 7/HTTP][IP: 0/Unknown][ClearText][Confidence: Match by port][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 1][cat: Web/5][1 pkts/54 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Risk: ** Malicious Fingerpint **** Unidirectional Traffic **][Risk Score: 110][Risk Info: No server to client traffic / Massive scanner detected (probably zmap)][TCP Fingerprint: 2_255_65535_e3b0c44298fc/Unknown][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
4 TCP 192.168.2.61:42416 -> 192.168.2.65:80 [proto: 7/HTTP][IP: 0/Unknown][ClearText][Confidence: Match by port][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 1][cat: Web/5][1 pkts/54 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Risk: ** Malicious Fingerpint **** Unidirectional Traffic **][Risk Score: 110][Risk Info: No server to client traffic / Massive scanner detected (probably zmap)][TCP Fingerprint: 2_255_65535_e3b0c44298fc/Unknown][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
5 TCP 192.168.2.61:47290 -> 192.168.2.245:80 [proto: 7/HTTP][IP: 0/Unknown][ClearText][Confidence: Match by port][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 1][cat: Web/5][1 pkts/54 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Risk: ** Malicious Fingerpint **** Unidirectional Traffic **][Risk Score: 110][Risk Info: No server to client traffic / Massive scanner detected (probably zmap)][TCP Fingerprint: 2_255_65535_e3b0c44298fc/Unknown][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
6 TCP 192.168.2.61:48731 -> 192.168.2.165:80 [proto: 7/HTTP][IP: 0/Unknown][ClearText][Confidence: Match by port][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 1][cat: Web/5][1 pkts/54 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Risk: ** Malicious Fingerpint **** Unidirectional Traffic **][Risk Score: 110][Risk Info: No server to client traffic / Massive scanner detected (probably zmap)][TCP Fingerprint: 2_255_65535_e3b0c44298fc/Unknown][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
7 TCP 192.168.2.61:49523 -> 192.168.2.215:80 [proto: 7/HTTP][IP: 0/Unknown][ClearText][Confidence: Match by port][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 1][cat: Web/5][1 pkts/54 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Risk: ** Malicious Fingerpint **** Unidirectional Traffic **][Risk Score: 110][Risk Info: No server to client traffic / Massive scanner detected (probably zmap)][TCP Fingerprint: 2_255_65535_e3b0c44298fc/Unknown][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
8 TCP 192.168.2.61:51197 -> 192.168.2.108:80 [proto: 7/HTTP][IP: 0/Unknown][ClearText][Confidence: Match by port][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 1][cat: Web/5][1 pkts/54 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Risk: ** Malicious Fingerpint **** Unidirectional Traffic **][Risk Score: 110][Risk Info: No server to client traffic / Massive scanner detected (probably zmap)][TCP Fingerprint: 2_255_65535_e3b0c44298fc/Unknown][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
9 TCP 192.168.2.61:56788 -> 192.168.2.249:80 [proto: 7/HTTP][IP: 0/Unknown][ClearText][Confidence: Match by port][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 1][cat: Web/5][1 pkts/54 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Risk: ** Malicious Fingerpint **** Unidirectional Traffic **][Risk Score: 110][Risk Info: No server to client traffic / Massive scanner detected (probably zmap)][TCP Fingerprint: 2_255_65535_e3b0c44298fc/Unknown][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
10 TCP 192.168.2.61:57862 -> 192.168.2.50:80 [proto: 7/HTTP][IP: 0/Unknown][ClearText][Confidence: Match by port][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 1][cat: Web/5][1 pkts/54 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][< 1 sec][Risk: ** Malicious Fingerpint **** Unidirectional Traffic **][Risk Score: 110][Risk Info: No server to client traffic / Massive scanner detected (probably zmap)][TCP Fingerprint: 2_255_65535_e3b0c44298fc/Unknown][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]