I used green mangoh WP8540.
When i connect to green i get message.
$ ssh email@example.com
The authenticity of host ‘192.168.2.2 (192.168.2.2)’ can’t be established.
RSA key fingerprint is SHA256:fNUDT9f3Nyqnz/qKYEjwqhK5TZBd/o3sydyRIcuG5xU.
Are you sure you want to continue connecting (yes/no)?
how to connect via ssh only with your keys?
and no one else could connect to the board?