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Network Security Snort-Signatures
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[Snort-sigs] Var that don't work

Subject: [Snort-sigs] Var that don't work
Date: Mon, 10 Sep 2007 10:56:16 +0200

I would adapt the rules 
BLEEDING-EDGE CURRENT EVENTS DNS-Rebinding Attack
to my network. Since I have a lot of RFC1918 computers that are not in my 
HOME_NET, I have a lot of FP.

I try the following method. I had the following variables in 
the /etc/snort/snort.conf:

var RFC1918 [192.168/16,172.16/12,10/8]
var INTERNET !$RFC1918



I modify the rules as :
alert tcp $INTERNET 53 -> $HOME_NET any (msg:"BLEEDING-EDGE CURRENT EVENTS 

But it doesn't work.


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