SSH Connector - Unable to negotiate key exchange for server host key algorithms

KNIME Analytics Platform
1

Hey Knime Team,

Hoping for fix or workaround, when using the SSH Connector to access an SFTP site i am presented with the below error:

Execute failed: Unable to negotiate key exchange for server host key algorithms (client: ecdsa-sha2-nistp256-cert-v01@openssh.com,ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256-cert-v01@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-ed25519,sk-ecdsa-sha2-nistp256@openssh.com,sk-ssh-ed25519@openssh.com,rsa-sha2-512,rsa-sha2-256,ssh-rsa / server: ssh-dss) (SshException)

After a bit of googling i think this is due to ssh-dss be deprecated. However i was wondering if there is way to work around it.

The workaround will need to work on Knime AP (both Mac and Windows) and Knime Business Hub.

Thanks Team

1 Like
2

Hi @ajc -

Think this recently created ticket will address your issue eventually. Iā€™m not aware of a workaround at the moment, but I can ask.

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