Snort mailing list archives

drowning in http inspect NON RFC character alerts


From: "John York" <YorkJ () brcc edu>
Date: Wed, 4 Feb 2004 10:56:14 -0500

I'm getting 10-20,000 alerts/day on a small (<500 hosts) network.  I
tried adding no_alerts to my config as follows:

preprocessor http_inspect: global \
    iis_unicode_map unicode.map 1252

preprocessor http_inspect_server: server default \
    profile all \
    ports { 80 8080 } \
    no_alerts

That didn't work.  I also tried non_rfc_char {  } in the hopes it
wouldn't check for anything, but it bombs on start.

I was able to use no_alerts on a unique server config with an IP address
and that did work for that one server (a McAfee ePO server--it uses http
to update virus clients and appears to do a lot of non-standard stuff.)
Unfortunately, most of the hits I have left are students in labs going
common sites like AOL.

Thanks
John

John York
Network Engineer
Blue Ridge Community College
1 College Lane, Weyers Cave, VA 24486
540.453.2255



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