North American Network Operators Group
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Re: telnet vs ssh on Core equipment , looking for reasons why ?

  • From: fingers
  • Date: Tue Jul 31 11:39:51 2001 
Hi

> Pardon for blowing your bubble but sniffing ssh keyexchange does not do you
> any good. The symmetric key is exchanged via a channel aready secured. The
> keys that is used to secure the channel used to exchange the symmetric key
> are exchanged via DH-based protocol. If you want to spend your time
> factoring primes for next 500 years to extract the key, you are more than
> welcome to try. It is crypto-101.

ssh1 keys can be sniffed easily enough with things like ettercap and the
like. Last I checked, it couldn't do ssh2, dunno what the status is
now....

--Rob