telnet vs ssh on Core equipment , looking for reasons why ?

Greg Maxwell gmaxwell at
Tue Jul 31 15:32:53 UTC 2001

On Tue, 31 Jul 2001 alex at wrote:

> Monkey in the Middle attack on SSH is very difficult to perform. I'm cc'ing
> Matt Bishop (bishop at 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:

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).

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