ERROR

This message occurs when an unsupported cipher is used while attempting an SSH connection.

Attempt to connect with SSH by using a supported cipher.

Attempted an SSH connection using unsupported cipher %s.

ciphername (STRING): Cipher used for the SSH connection.

ERROR

This message occurs when an unsupported host key algorithm is used while attempting an SSH connection.

Attempt to connect with SSH by using a supported host key algorithm.

SSH connection from %s was attempted using an unsupported host key algorithm %s.

ipaddress (STRING): IP address of the remote host that was trying to establish an SSH connection.
hostkeyalgorithm (STRING): Host key algorithm used for the SSH connection attempt.

ERROR

This message occurs when an unsupported key exchange algorithm is used while attempting an SSH connection.

Attempt to connect with SSH by using a supported key exchange algorithm.

Attempted an SSH connection using unsupported key exchange algorithm %s.

kexalgorithm (STRING): Key exchange algorithm used for the SSH connection.

ERROR

This message occurs when an unsupported Message Authentication Code (MAC) is used while attempting an SSH connection.

Attempt to connect with SSH by using a supported MAC.

Attempted an SSH connection using unsupported MAC %s.

macname (STRING): MAC used for the SSH connection.