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Veeam Connection Error

Created by dave. Last edited by dave, 2 years and 294 days ago. Viewed 944 times. #1
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(2016-02-19)

Problem

Veeam can't connect to the target Debian server, fails with: Server does not support diffie-hellman-group1-sha1 for keyexchange

Solution

Add the following to /etc/ssh/sshd_config:

KexAlgorithms diffie-hellman-group1-sha1,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1

Ciphers 3des-cbc,blowfish-cbc,aes128-cbc,aes128-ctr,aes256-ctr

Generate the new keys:

ssh-keygen -A

Restart sshd, or reboot.

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