There is documentation for the preprocessor alerts available on
snort.org. If you take the gid:sid combination and search for it on
snort.org under the "sigs" search on the left hand side of the page.
Joel
On Feb 18, 2008, at 6:40 AM, Julio Cesar Gazquez wrote:
Hello list.
I'm trying to reduce my false positives, I already silenced a few,
however I'm
trying to understand why an alert is triggered, and not just shut
them up
blindly, (e.g. I think is ok if that robots.txt is accesed from
address
blocks owned by well known search engines).
Now I'm facing http preprocessor's "OVERSIZE CHUNK ENCODING" alerts.
While I'm
not sure, I guess that requests including large hex values could
trigger
this, even if there is no chunk encoding at all. So requests to our
website
including session IDs in the GET request will produce a lot of false
positives in our IDS. I am right, or I should look somewhere else?
Thanks in advance.
--
Julio CÃsar GÃzquez
Seguridad InformÃtica -- Int. 736
Municipalidad de Rosario
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Joel Esler ï joel.esler@sourcefire.com
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