IDS mailing list archives
RE: Newbie question: autoblocking with IDS/IPS
From: "Gary Halleen (ghalleen)" <ghalleen () cisco com>
Date: Thu, 16 Dec 2004 20:40:41 -0800
Inline... Gary -----Original Message----- From: Mike Johnson [mailto:mike () enoch org] Sent: Monday, December 13, 2004 2:00 PM To: focus-ids () securityfocus com Subject: Re: Newbie question: autoblocking with IDS/IPS Daniel wrote:
I'm thinking of buying one of that new CISCO IDS boxes which can be placed inline in the future.
MJ> Do you mean the 4240? If so, we just received a couple of them and intend to put them through their paces in our lab. The following Cisco sensors can be run in inline mode with IPS 5.0 software: - 4215 - 4235 - 4240 - 4250 - 4255 - 4250-XL - IDSM-2 The 4240 and 4255 are the newest sensors, and have just recently started shipping. The main difference between these and the other models is they do not have hard drives or CDROM drives. Instead, they utilize flash cards and can be upgraded or reimaged from the network rather than the CD.
Is anybody of you using the automatic shunning (I guess it's called so) feature of the CISCO IDS? Does this make sense? (Which signatures should be autoblocked?)
MJ> We were told that the version of the software that handles blocking is not yet shipping. If anyone knows any different, do tell. We haven't quite figured out our policy on what gets blocked and what doesn't, but we'll take it on a signature by signature basis. The IPS 5.0 release will be shipping in the next couple months, and allows inline operation. Shunning is an older feature that many customers used in earlier releases. It will continue to be supported if you wish, but several drop actions will likely be more popular.
Or are you just monitoring and then blocking manually?
MJ> We're not 100% convinced we'll put them in blocking mode at this point. Ideally, it would be automagic, but false positives lead to blocking legitimate traffic by accident. Traffic normalization and antivirus signatures might change your mind on this. Even when installed in inline mode, though, you can select which signatures take automatic blocking actions of any type. Gary -------------------------------------------------------------------------- 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:
- Newbie question: autoblocking with IDS/IPS Daniel (Dec 13)
- Re: Newbie question: autoblocking with IDS/IPS Mike Johnson (Dec 16)
- RE: Newbie question: autoblocking with IDS/IPS Gary Halleen (ghalleen) (Dec 17)
- CISCOs new IPS Christoph Pertl (tm011081) (Dec 16)
- Re: CISCOs new IPS p z (Dec 17)
- Tippingpoint IPS Christoph Pertl(tm011081) (Dec 23)
- Re: Tippingpoint IPS Bob Walder (Dec 27)
- Re: Tippingpoint IPS Paul Schmehl (Dec 27)
- Re: CISCOs new IPS p z (Dec 17)
- Re: Newbie question: autoblocking with IDS/IPS Mike Johnson (Dec 16)