IDS mailing list archives
Re: Snort signature packet generator
From: Dirk Geschke <Dirk_Geschke () genua de>
Date: Mon, 8 Nov 2004 17:37:37 +0100
Hi Graeme,
I'm attempting to train a neural network using snort, and I'm having trouble getting a good number of "bad" packets, IE: those that snort considers malicious. Since a snort signature is really just a definition of a subset of all possible packets, it seems like it should be possible to create a packet that snort considers bad by filling in packet fields based on a snort signature, then filling the rest of the packet with random garbage. Does anyone know if this type of program has already been created, and if so, where could I find it? Thanks.
fpg, the false-positive generator does exact this. But actually not all keywords are supported. Especially pcre is difficult to implement. fpg is part of the Fast Logging Project for snort: FLoP You can find it at http://www.geschke-online.de/FLoP/ The manual page for fpg is online available: http://www.geschke-online.de/FLoP/fpg.8.html But note: For TCP the most alerts will not work as long as stream4 is used (or equivalent the established flag is set). To get all alerts you should disable stream4 for this case. Best regards Dirk -------------------------------------------------------------------------- Test Your IDS Is your IDS deployed correctly? Find out quickly and easily by testing it with real-world attacks from CORE IMPACT. Go to http://www.securityfocus.com/sponsor/CoreSecurity_focus-ids_040708 to learn more. --------------------------------------------------------------------------
Current thread:
- Snort signature packet generator Graeme Connell (Nov 08)
- RE: Snort signature packet generator Eric Hines (Nov 09)
- RE: Snort signature packet generator Jeff Dell (Nov 09)
- Re: Snort signature packet generator Dirk Geschke (Nov 09)
- RE: Snort signature packet generator Leandro Reox (Nov 12)
- Re: Snort signature packet generator Martin Roesch (Nov 09)
- Re: Snort signature packet generator Stefano Zanero (Nov 14)
- <Possible follow-ups>
- RE: Snort signature packet generator adam.w.hogan (Nov 09)
- Re: Snort signature packet generator ADT (Nov 12)
- Re: Snort signature packet generator Derek Armstrong (Nov 09)
- RE: Snort signature packet generator Simon and Lori Chang (Nov 12)