IDS mailing list archives
Re: McAfee IDS signature writing
From: Vijay K <globevk () yahoo com>
Date: Fri, 24 Aug 2007 21:57:25 -0700 (PDT)
FYI... To set thresholds especially on IPS, plenty of probability/bayesian/other models math might be involved to get a baseline. one of the reasons, the more trial data one has the better IPS gets. Its kinda like spam filters. Then the identification of origin IP addresses in identifying spoofed IP addresses, patterns that match hostile potential rogue packets. Its a world by itself needs in-depth research. Most companies spend substantial R&D effort. For how its implemented with examples, honeypot/snort. Not an implementation expert. Cant help you there :) Best Regards, Vijay Kakumanu --- krymson () gmail com wrote:
I wish I had an answer for you, but I'm in the same boat as far as trying to figure out McAfee IDS/IPS rules. I wish you could view their rules to see how they make em. Anyway, I wanted to just post that any responses can be directed to the list (if there are any) rather than just to Mark, and at least I would benefit as well! :) <- snip -> Does anyone have any experience with writing signatures for McAfee IPS systems? It's a bit frustrating compared to a system like Snort, because the vendor-supplied sigs are "secret sauce". I can't just look in there for examples similar to what I'm trying to achieve. What I'm after in this case should in principle be relatively simple - I want to catch certain function calls in an HTTP response, but only in the context of a javascript block. I'd like to avoid tripping the signatures if the same strings come up in the regular text of a page, e.g. a in a mailing list posting describing an IDS signature or a browser vulnerability... Regards Mark PS - kindly cc me on replies, as I'm not subscribed to the list
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Current thread:
- McAfee IDS signature writing senatorfrog (Aug 24)
- Re: McAfee IDS signature writing Vijay K (Aug 27)
- <Possible follow-ups>
- Re: McAfee IDS signature writing krymson (Aug 24)
- Message not available
- Re: McAfee IDS signature writing Mark Senior (Aug 27)
- Message not available
- Re: McAfee IDS signature writing Vijay K (Aug 27)
- Re: McAfee IDS signature writing Vijay K (Aug 27)