IDS mailing list archives
Re: need your help about IPS and IDS,thanks
From: "Lily" <xiaoche111 () hotmail com>
Date: Wed, 17 Nov 2004 16:25:02 +0800
My thesis focus on the several level protection and the IPS is the important part.But I know little on IPS and I can not distinguish the IPS and 'anomaly' detection IDS besides the inline and passive,I think the detailed technology about the two is same.Because there all bulid normal model. I thought to do a data mining analysis tool several days ago,but I think it is difficult to me.I am expecting the SFS,but I think maybe I can not understand how to work because I still not use the snort.I am a green hand in the IDS/IPS and I only know little:( ----- Original Message ----- From: "Ophir Rachman" <ophir () securimine com> To: <focus-ids () securityfocus com> Sent: Wednesday, November 17, 2004 4:45 AM Subject: RE: need your help about IPS and IDS,thanks
Lily, I am not sure what is you thesis focus and what exactly is the project about but I happen to work in a company called Securimine which is distributing SFS - a data mining analysis tool for snort (you may have a look - I will love your feedback). I have some thoughts for you that might be helpful: - IPS and IDS are not really different. They both monitor the systems, make some decisions based on rules (these can be behavioral rules or specific attacks signatures), and then decide on action. - The one difference is that IDS do not support 'block' as an action while IPS do. This difference implies that IPS must be positioned inline while IDS can be passive. - The dream of IPS is that the security system will do everything for you and will make sure that everything that needs to be prevented is prevented and the rest is just logged. This dream is NOT true and if I may say so, will never come true (perhaps only for DDos and 'quantity oriented' attacks like worms). The reality is that the best IPS systems today have 10% of their ruleset marked as 'blocking' since 90% of the rules create too much noise. Eliminating the noisy rules diminishes the value of the detection engine and is not realistic. - Without doing too much marketing, this is why we started Securimine. We believe that even if you block what you can, there is still going to be tons of data generated by the other rules which is important and need to be analyzed. This is the true value of data mining - the ability to identify the normal behavior from the data itself and alert when things out of the ordinary happen. Hope that helps, Ophir Rachman, Ph.D. Securimine Software Inc. ophir () securimine com -----Original Message----- From: Lily [mailto:xiaoche111 () hotmail com] Sent: Saturday, November 13, 2004 6:53 AM To: focus-ids () securityfocus com Subject: need your help about IPS and IDS,thanks hi,all I have some questions to ask which must be simple to you I think. 1.IPS must build normal model while IDS can use the abnormal model(misuse detection)?If it is what's the difference between the IDS's anomaly detection and IPS? 2.Has someone formally use the data mining technology in the IPS? 3.Besides the DoS and buffer overflow etc,has any other way be used in IPS just like the users behaviour analysis? 4.Why someone said IPS can not log the trace of the attacks while IDS can do?I think IPS can do it easily.Maybe because IPS is in-line and log the trace needing many time? So depressed with the IDS/IPS and my thesis is flying in the sky:( Thank you in advance. Lily --- Incoming mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.797 / Virus Database: 541 - Release Date: 11/15/2004 --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.797 / Virus Database: 541 - Release Date: 11/15/2004 -------------------------------------------------------------------------- Test Your IDS Is your IDS deployed correctly? Find out quickly and easily by testing it with real-world attacks from CORE IMPACT. Go to http://www.securityfocus.com/sponsor/CoreSecurity_focus-ids_040708 to learn more. --------------------------------------------------------------------------
Current thread:
- need your help about IPS and IDS,thanks Lily (Nov 16)
- RE: need your help about IPS and IDS,thanks Andy Cuff (Nov 17)
- <Possible follow-ups>
- RE: need your help about IPS and IDS,thanks Eric McCarty (Nov 16)
- Re: need your help about IPS and IDS,thanks Lily (Nov 17)
- RE: need your help about IPS and IDS,thanks Andy Cuff (Nov 18)
- RE: need your help about IPS and IDS,thanks Chris Petersen (Nov 19)
- RE: need your help about IPS and IDS,thanks Stuart Staniford (Nov 22)
- RE: need your help about IPS and IDS,thanks Omar Herrera (Nov 23)
- Re: need your help about IPS and IDS,thanks Lily (Nov 17)
- Re: need your help about IPS and IDS,thanks Lily (Nov 17)
- Message not available
- need your help about IPS and IDS,thanks Zhuowei Li (Nov 19)