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Network Security Snort-Signatures
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[Snort-sigs] testing snort signature with uri content

from [MD B Zaman L] Network Security [Permanent Link]
Subject: [Snort-sigs] testing snort signature with uri content
Date: Wed, 13 Feb 2008 05:49:30 -0500 
Greetings All,

         I am a new user of snort . I am finding some difficulty in using
the snort signatures with uri content.

        I have created my own snort signature as follows to test for uri
content.

       alert tcp $EXTERNAL_NET any -> $HTTP_SERVERS 80  (msg:"uri content
testing successful "; flow:to_server,established; uricontent:"/server-info";

       sid:1000007; )


     After that I tried to access the webpage
http://<http_server>/server-info  and verified with ethereal whether the
content /server-info  is generated or not.
     Ethereal was showing that the content was generated.

     But no alert was fired for the  above written signature .

     Please clarify me how to test signatures with uri content.

     Snort is working fine as I have checked with other signatures with no
uricontent.

       With Thanks in Advance

    regards
    zaman

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