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Author Topic: "no matching algo kex"  (Read 8972 times)

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Offline OkydOky

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"no matching algo kex"
« on: October 07, 2015, 05:07:00 pm »
I can't seem to SSH anything from my Almond+

I get the Error:
ssh: connection to xxxx@X.X.X.X:22 exited: no matching algo kex

I used to be able to get this error to some machines but not others.
But now after recently Upgrading my last server to Debian Jessie, I can not SSH to it from my Almond+.

I've tried SSHing to: Debian Jessie, Ubuntu 15.04 and FreeBSD 10 all with the same issue.

« Last Edit: October 07, 2015, 06:37:01 pm by OkydOky »

Offline SecureComp

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Re: "no matching algo kex"
« Reply #1 on: October 07, 2015, 08:04:38 pm »
Your upgraded OS no longer supports the key algorithm used by the SSH client.

You can workaround this by adding the appropriate key algo to your /etc/ssh/sshd_config, restarting ssh and regen some keys.

Keep in mind this is a workaround, the reason the key algo isn't supported is that it's considered less secure.

My guess is that it would be diffie hellman group1 sha1 giving you the trouble.
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