IDS: RE: IDS requirement

["SecurIT Informatique Inc." <securit () iquebec com>]

I agree with Nelson, in the fact that for most people, the term IPS means 
only one type of technology.  The "IDS is dead" Gartner report surely 
didn't help at correcting this situation.
I would only add that the IPS system (either NIPS or HIPS) will only be as 
good as the underlying IDS engine under it (either built-in or 
third-party).  Most network-based systems work on the "known 
vulnerabilities" principles, meaning that this kind of systems usually 
performs poorly against 0-day exploits.  A system based on "known secure 
state" of your machines, or "white list" seems more promising against 
unknown vulnerabilities.  And by design, HI(D|P)S are more appropriate for 
this approach that NI(D|P)S.
Ideally, I think that both methods should be used, if just for the sake of 
security in layers.
My 2 cents.

Floydman

At 03:03 PM 01/12/2004, Brito, Nelson (ISS Brazil) wrote:
> I disagree, because the IPS concept is misunderstood for almost
> everybody.
>
> IPS, as you said, is Intrusion Prevention (some people says Protection)
> System.
>
> IMHO, IPS is something between the source of attack and the target,
> blocking or stopping the attack in real time, without interaction (or
> any kind of re-configuration) with other device / application.
>
> The IPS, by default, uses its own engine to do that, which means that
> IPS does not need to re-configure nor Firewalls neither Routers to block
> or stop a threat, even because IPS is not just a technology to use
> protecting network segments. It is a concept, as I said bellow, between
> the source of attack and the target. It can be a HIPS, stopping the
> attack before it reaches the target (OS).
>
> So, briefly, IPS can be:
> 1 - A network engine to stop attacks before they reach the target
> systems, a device in other words;
> 2 - An engine installed on a machine which stops the attacks before they
> reach the machine, an engine working in Kernel space or even in a lowest
> level.
>
> Sorry my broken English, it is not my main Language, by the way.
>
> Cheers.
>
> - nb
>
> {(!($^O=~/^[M]*$32/i)&&($0=~s!^.*/!!))||($0=~s!.*\\!!)}print$0;
>
>
>
> -----Original Message-----
> From: Jimi Thompson [mailto:jimi.thompson () gmail com]
> Sent: Wednesday, December 01, 2004 2:35 AM
> To: skill2die4 () secguru com
> Cc: Raj B; focus-ids () securityfocus com
> Subject: Re: IDS requirement
>
>
> I realize that I'm a bit late here, but it's been a holiday.  We had a
> similar discussion on the SNORT mailing list recently and I'll distill
> it down for you.  The general concensus is that IPS is mostly marketing
> hype.  Unless you are doing something to identify an attack in progress
> in real time and actively doing something (i.e. modifying a firewall
> rule or routing table) to stop that attack, you are not an IPS, because
> you are not, by definition, preventing anything.
>
> IDS = intrusion detection system
>
> IPS = intrusion prevention system
>
> HTH,
>
> Jimi
>
>
> On Mon, 22 Nov 2004 15:28:28 -0600 (CST), skill2die4 () secguru com
> <skill2die4 () secguru com> wrote:
> >
> > >
> > > Can anyone email me a document on how IDS/IPS actually
> > > works.....with the terminology well explained.
> > >
> >
> > IMHO, articles of your interest would be :
> >
> > FAQ's
> > ============
> > [FAQ] Sniffing (network wiretap, sniffer)
> > [FAQ] IDS
> >
> > Terminology
> > =============
> > [AndyCuff] Intrusion Detection Terminology
> > [A.Cliff] Intrusion Detection Systems Terminology
> >
> > Basic Papers
> > ===============
> > [SecurityFocus] An Introduction to Intrusion Detection Systems
> > [SecurityFocus] Network Intrusion Detection Signatures [SecurityFocus]
>
> > Intrusion Detection: Filling in the Gaps [Cisco] Intrusion Detection
> > Planning Guide
> >
> > links to all the above is availabe at,
> >
> > http://www.secguru.com/index.php/content/category/6/145/115/
> > [ www.secguru.com -> Network Devices -> IDS ]
> >
> > Also , visit Andy Cuff's site : http://www.networkintrusion.co.uk/
> > for much info ... :-)
> >
> > HTH,
> >
> > -=skillz=-

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