Re: multiple content matches

[Ashley Thomas <athomas () cc gatech edu>]

Here is one from rpc.rules which has 2 'content' options and respective 
'offset' and 'depth'

rpc.rules:

alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"RPC snmpXdmi overflow 
attempt"; flow:to_server,established;
content:"|0000 0f9c|"; offset:0; depth:4; content:"|00018799|"; offset: 
16; depth:4; reference:bugtraq,2417; reference:cve,CAN-2001-0236; 
reference:url,www.cert.org/advisories/CA-2001-05.html; 
classtype:attempted-admin; sid:569;  rev:5;)


Travis S. wrote:

> Can Snort handle checking a single packet against 3 or more content strings to generate an alert?  For example, I want 
> to check for string A at offset 1, string B at offset 43 and string C at offset 76 all within the same packet.
>
> I didn't see anything about this in the docs.
>
> Thanks,
> Travis
>
>
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--
Ashley Thomas
Research scientist
College of Computing
Georgia Tech




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