Bugtraq mailing list archives
Re: Unhackable network really unhackable?
From: Crispin Cowan <crispin () immunix com>
Date: Fri, 28 Nov 2003 02:10:19 -0800
Julian Wynne wrote:
Furthermore we would like to point out that InvisiLAN technology has no relation whatsoever with DHCP, for example InvisiLAN changes randomly not just the IP address but also the MAC address and the port numbers.The InvisiLAN technique is an instance of what I called "interface permutation" in this paper:
"The Cracker Patch Choice: An Analysis of Post Hoc Security Techniques". Crispin Cowan, Heather Hinton, Calton Pu, and Jonathan Walpole. Presented at the National Information Systems Security Conference (NISSC) <http://csrc.nist.gov/nissc/>, Baltimore MD, October 16-19 2000. PDF <http://immunix.com/%7Ecrispin/crackerpatch.pdf>.The specific approach of IP address hopping was described in this DARPA experiment:
"Dynamic Approaches to Thwart Adversary Intelligence Gathering <http://www.iaands.org/discex_II/Briefs/13June/I&E/I&E_4_Kewley_DISCEXII_DYNAT.ppt>", Doreen Kewley et al, DARPA Information Survivability Conference & Expo (DISCEX II), June 12-14, 2001.
We understand that the claim of unhackability is a steep one but I can assure you that anyone who has tested the system in the past has been swept away by the effectiveness and the implications of this new technology.In the DARPA experiment anyway, it turned out to be hackable :) More precisely, it imposed a delay on the attacker, but did not stop them. A notable difference is that the DARPA experiment only changed the IP address, and not the MAC address. I'm not convinced that this will make a difference, but it could.
Crispin -- Crispin Cowan, Ph.D. http://immunix.com/~crispin/ Chief Scientist, Immunix http://immunix.com http://www.immunix.com/shop/
Current thread:
- Unhackable network really unhackable? ジースポート 黒田 (Nov 24)
- Re: Unhackable network really unhackable? vb (Nov 24)
- <Possible follow-ups>
- RE: Unhackable network really unhackable? Bohling James CONT JBC (Nov 24)
- Re: Unhackable network really unhackable? Julian Wynne (Nov 27)
- Re: Unhackable network really unhackable? Niels Bakker (Nov 27)
- Re: Unhackable network really unhackable? Crispin Cowan (Nov 28)
- Re: Unhackable network really unhackable? Kurt Seifried (Nov 29)
- Re: Unhackable network really unhackable? Thor (Nov 29)