I met a group from Washington University that was doing this exact thing last year. Check their paper out:

http://www.arl.wustl.edu/~todd/hoti.pdf

I liked their approach, seemed pretty cool (and they used Snort as their test bed).

     -Marty

On Apr 12, 2006, at 12:02 AM, Raj Malhotra wrote:

Hi,

I would like to know if any of the commercial IDS/IPS vendors are
using hash based techniques such as bloom filters/rabin finger prints
for  fast path filtering.

If so, i would appreciate if links to white papers or any other online
information can be shared with me.

thanks
-Ral

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--
Martin Roesch - Founder/CTO, Sourcefire Inc. - +1-410-290-1616
Sourcefire - Security for the Real World - http://www.sourcefire.com
Snort: Open Source Network IDS - http://www.snort.org





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