Connections to a Linux machine fail with the following errors:
Authentication was partially successful, but server requires additional authentication with: 'password'.
No suitable authentication method is supported. Supported methods: 'password'.
Some tasks may not display these errors and instead behave as if the SSH connection failed. The error, however, is still written in the logs:
Warning Failed to establish SSH connection. Warning No suitable authentication method found to complete authentication (password). (Renci.SshNet.Common.SshAuthenticationException)
This error occurs when the remote Linux machine's SSH service /etc/ssh/sshd_config has been configured to require two or more authentication methods in sequence.
For example, "AuthenticationMethods publickey,password
" would require that all connections must provide first the publickey and then enter the account password.
Veeam Backup & Replication supports SSH authentication using username and password or publickey, but it does not support the use of both in sequence.
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