# [OmniOS-discuss] common-factor key exchange

Christian Kivalo valo at valo.at
Fri Nov 28 09:55:04 UTC 2014

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    Hello,

    On Fri, 28 Nov 2014 19:17:03 +1000 Michael Mounteney <gate03 at landcroft.co.uk>
    wrote

    > After a recent upgrade to my Gentoo Linux installations, I can no
    > longer ssh into them from OmniOS:
    >
    > -bash-4.3$ ssh 192.168.1.48
    > no common kex alg: client
    > 'diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1', server
    > 'curve25519-sha256 at libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2
    > -nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1'
    >

    This seems to be a recurring error message with current linux distributions.

    I have noticed this error message after recently upgrading to Debian 8, where i
    currently have lowered the sshd defaults on Debian to allow the OmniOS to
    connect.

    I would be interestent in replacing the default ssh package with OpenSSH on the
    OmniOS installation, but the ssh package seems to be bound to @entire so this
    looks to me as if this is not as easy as uninstall/install to replace the ssh
    daemon/client...

    > The client being OmniOS and the server being Gentoo Linux.  Now I could
    > downgrade what Gentoo offers, but it would be nicer to upgrade what
    > OmniOS offers.  Is there a way ?

    It should be possible to create a special host configuration to offer specific
    kex algorithms only to the the OmniOS client but had no time to test that
    configuration.

    >
    > Michael.

    - christian

    > _______________________________________________
    > OmniOS-discuss mailing list
    > OmniOS-discuss at lists.omniti.com
    > http://lists.omniti.com/mailman/listinfo/omnios-discuss

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