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Network Security Snort-Signatures
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Re: [Snort-sigs] Rule for identifying all trafic except the specefied

Subject: Re: [Snort-sigs] Rule for identifying all trafic except the specefied
Date: Wed, 14 Jun 2006 16:23:59 -0400
Rajkumar S wrote:

fwsam is used for snortsam, for blocking the ip using alerts of snort. 
Now I want to negate this rule to alert all streams that do not match 
this rule. When I try to use ! operator I get an error about Pure not 
rule. I am using snort 2.4.5

You could change that to a pass rule, then do an unconditional alert without 
content for the rest.  But be careful what you wish for :-)  You'll probably 
want to threshold it or something similar.

Jeff



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