Operational Defect Database
BugZero found this defect 291 days ago.
Data sources
All data on this page is proprietary to BugZero® or gathered from public sources
Veeam | kb4479
SSH Connection Failure to Linux Machine Requiring Multiple Sequential AuthenticationMethods
Last update date:
8/3/2023
Affected products:
Veeam Backup & Replication
Affected releases:
ALL
Fixed releases:
No fixed releases provided.
Description:
Challenge
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'.
Cause
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.
Solution
Update the AuthenticationMethods setting within /etc/ssh/sshd_config so that it does not require more than one authentication method.
More Information
AuthenticationMethods details in sshd_config man page
