Application level IDS?

From: Smokey Lonesome <smokey_ids(at)yahoo.com>
Date: Wed Jun 18 2003 - 17:52:23 EDT

Hi IDS experts,

        I'm not deeply familiar with IDS technologies and products, so I apologize in advance if this is a too-trivial question:         

        Is there anything like an "application level IDS" ?
(similar to what is now called "application
firewall"?)         

        What I mean is something that has the non-intrusive characteritics of an IDS (as it was discussed lately regarding Gartner's article - I'm talking about I_D_S and not I_P_S) but which is doing deep application level analysis, maybe even application-session
(cookies?) related analysis (though i'm not sure it is
possible to keep track of a session when you're just monitoring traffic).

        I think such a system should be able to detect the many application level attacks - SQL injections, hidden-fields tampering, cookie poisoning etc. while being more sensitive than a firewall\IPS considering it is not blocking any traffic upon detecting "suspicious" activity.

        Does something like that exist? Has any of you implemented it? Can it be implemented using any of the existing IDS's (maybe on top of Snort's stream4? Someone mentioned in a recent post "build POP3 protocol intelligence" - how can this be done with existing tools? can it be done for HTTP\HTML as well?)         

	TIA,	
	(-) Smokey.

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Received on Wed Jun 18 20:28:50 2003