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HELP - ssh_excange_identification: Connection closed-SOLVED
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Moriah
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Joined: 27 Mar 2004
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Location: Kentucky

PostPosted: Sun May 26, 2019 1:31 pm    Post subject: HELP - ssh_excange_identification: Connection closed-SOLVED Reply with quote

I had my oldest and slowest machine lock up during updates, so I had to reboot it. It is a 32 bit celeron. After the reboot, I can no longer ssh into it:
Code:

moses ~ # ssh root@jacob
ssh_exchange_identification: read: Connection reset by peer
moses ~ #

I googled the message, but the answers were all over the place. This machine is a firewall/router and has been up for about a year before the reboot this morning. I checked the /etc/ssh/sshd_config file for any undesired changes, but it looked ok at first glance.

Anybody know what's causing this?
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Last edited by Moriah on Sun May 26, 2019 1:55 pm; edited 1 time in total
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runningnak3d
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PostPosted: Sun May 26, 2019 1:48 pm    Post subject: Reply with quote

You are trying to ssh to an old box that has old cyphers from a new machine that has those cyphers disabled

You need to enable them in your ssh client config, either globally in /etc/ssh/ssh_config or in your local .ssh/config

-- Brian
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Moriah
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PostPosted: Sun May 26, 2019 1:54 pm    Post subject: Reply with quote

No, it was much simpler than that. When I rebooted that machine after the lock-up, I rebooted its hot standby by mistake. So I never rebooted the hung machine. :oops:
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