Jaime Blasco Blog


Snort: Rule to detect Modbus device fingerprinting
Tue, 21 Apr 2009

I've just published a snort rule to detect Scada Modbus Device fingerprinting tools like modscan:

alert tcp any any -> any 502 (msg:"ET SCAN Modbus Scanning detected"; content:"|00 00 00 00 00 02|"; depth:6; threshold: type both, track by_src, count 100, seconds 10; 
classtype:bad-unknown; reference:url,code.google.com/p/modscan/; reference:url,www.rtaautomation.com/modbustcp/; sid:2009286; rev:1;)

You caN find it at Emerging Threats

posted at: 15:55 | path: /Scada Security | permanent link to this entry | 0 comments |



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