On Fri, 17 Jun 2016 19:49:44 +0200, "Dennis Matthiesen" wrote:
> I'm not sure if this a configuration issue or could this be a general
> problem with the 'Diffie-Hellman Group Exchange Request' not being
> processed properly by OpenBSD.
>
> Problem: OpenBSD SSH server isn't responding to the 'Diffie-Hellman Group
> Exchange Request' with 'Diffie-Hellman Group Exchange Group'. Server is
> sending a FIN ACK instead.
That sounds like a configuration issue. Newer versions of OpenSSH
don't accept these weak key exchange algorithms by default:
diffie-hellman-group1-sha1
diffie-hellman-group-exchange-sha1
You can add them back in /etc/ssh/sshd_config using the KexAlgorithms
setting. See sshd_config(5) for details.
Also see http://www.openssh.com/legacy.html
- todd
