Re: [Snort-users] multiple content matches

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.

-- 
Ashley Thomas
Research scientist
College of Computing
Georgia Tech




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