[40028] in North American Network Operators' Group
Re: telnet vs ssh on Core equipment , looking for reasons why ?
daemon@ATHENA.MIT.EDU (Greg Maxwell)
Tue Jul 31 11:33:29 2001
Date: Tue, 31 Jul 2001 11:32:53 -0400 (EDT)
From: Greg Maxwell <gmaxwell@martin.fl.us>
To: <alex@yuriev.com>
Cc: "Stephen J. Wilcox" <steve@opaltelecom.co.uk>,
fingers <fingers@fingers.co.za>,
"Mr. James W. Laferriere" <babydr@baby-dragons.com>,
<nanog@merit.edu>
In-Reply-To: <Pine.LNX.3.96.1010731111228.29579L-100000@cathy.uuworld.com>
Message-ID: <Pine.GSO.4.33.0107311128170.3912-100000@da1server.martin.fl.us>
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On Tue, 31 Jul 2001 alex@yuriev.com wrote:
> Monkey in the Middle attack on SSH is very difficult to perform. I'm cc'ing
> Matt Bishop (bishop@cs.ucdavis.edu) who together with yours truly wrote a
> paper on this in 1997.
Hard how? Are you talking about the complexity in coding the exploit app?
So what! It only has to be written once:
SSHv1
wget http://www.monkey.org/~dugsong/dsniff/dsniff-2.3.tar.gz
tar -zxf dsniff-2.3.tar.gz
man ./dsniff-2.3/sshmitm.8
The SSH security model is fundimentally weak against Man in the Middle,
because it provides no methodology to verify the transmitted key (beyond
crude manual methods... Not that PKI system used with SSL is all that
effective either).
