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Snort, Modify snort rule "WEB-CGI finger access" to ignore destination IP

Posted on 2010-09-14
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Last Modified: 2013-11-16
How do I change the snort rule to ignore when destination IP (e.g. desIP is 10.11.12.13)

alert tcp $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"WEB-CGI finger access"; flow:to_server,established; uricontent:"/finger"; nocase; metadata:service http; reference:arachnids,221; reference:cve,1999-0612; reference:nessus,10071; classtype:attempted-recon; sid:839; rev:8;)
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Question by:rgbcof
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5 Comments
 

Author Comment

by:rgbcof
ID: 33674300
More info on the question:
Source IP          Dest IP           Port
10.11.11.11      10.11.12.13      80         Snort         WEB-CGI finger access

So I want this SNORT rule to ignore when DestIP is 0.11.12.13
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LVL 3

Expert Comment

by:gorhon
ID: 33674310
Hello,

First find snort attack id number for this attack.

Please open the threshold.conf file. and goto last line and

suppress gen_id 122, sig_id 27, track by_src, ip 192.168.1.0/24

(gen id 122 and signature id 27 not collect from the 192.168.1.0/24 network)




14.09.jpg
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Author Comment

by:rgbcof
ID: 33674377
How do you modify the SNORT rule?
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LVL 3

Accepted Solution

by:
gorhon earned 125 total points
ID: 33674450
Sorry, this your rule. But how change rules? Many many hardwork. Good luck.

suppress gen_id xxxx, sig_id yyy, track by_dst, ip 10.11.12.13/32


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Author Closing Comment

by:rgbcof
ID: 33674844
Great, thanks for the lead.
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