Snort mailing list archives
Re: help with rules - data capturing
From: "Timothy Ding" <iolabs () gmail com>
Date: Fri, 21 Dec 2007 17:01:15 -0800
many thanks for the reply Paul, i still don't get any results from the rule, could it possibly be the version of snort (ver 2.3.3) that i am using? Regards, Tim
I think it should work pretty much as-is, but here is how I would write the rule: alert tcp any any -> $HOME_NET 13001 (msg: "GPRMC found in packet"; \ flow:to_server,established; content:"|24|GPRMC"; nocase; sid:9999000;) Use the flow: directive to only analyze packets that are in-state for the connection described. I also hexified the $ in $GPRMC just to be safe. That way it doesn't get treated like a variable by anything that parses that rule. And then use some non-published sid value so that if you're using BASE, SGUIL, or something else that lets you search/sort by sid values, you can access it. PaulM
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Current thread:
- help with rules - data capturing Timothy Ding (Dec 21)
- Re: help with rules - data capturing Paul Melson (Dec 21)
- Re: help with rules - data capturing Timothy Ding (Dec 21)
- Re: help with rules - data capturing Joel Esler (Dec 21)
- Re: help with rules - data capturing Paul Melson (Dec 23)
- Re: help with rules - data capturing Timothy Ding (Dec 26)
- Re: help with rules - data capturing Will Metcalf (Dec 26)
- Re: help with rules - data capturing Timothy Ding (Dec 21)
- Re: help with rules - data capturing Paul Melson (Dec 21)