When trying to monitor a Linux server trough ssh using private key, it fails connecting. The "Diagnose the Problem?" shows :
Authentication Information
SSH Version : 1.99 Check whether the PasswordAuthentication is set as yes in /etc/ssh/sshd_config file.Kindly set it as yes and restart the SSH daemon.More Info >>.
The ssh version is in fact "SSH-1.99-OpenSSH_3.9p1"