I want to disable direct root logins to my server, which runs WHM with Centos 6.5 and add specific user to the wheel group in order to be able to perform tasks with root privileges using `su`, but cannot find the answer to my problem anywhere - I spent whole day yesterday re-searching online - and no answer. I've done the following - while logged in via ssh as root, I've created new user: `newuser newsuperuser` and I've set the password for it `passwd newuserpassword` I then went ahead and added that user to the wheelgroup, by going to: `Security Center > Manage Wheel Group Users` and added newsuperuser to it. I then went to: `Security Center > Manage root's SSH Keys` and generated new key with newpassword - then authorised it. Next I've copied the private key to my local (Mac OSX) .ssh directory, run chmod 600 and added file to ssh session: `ssh-add newsuperuser_key` typed password when prompted. Now if I try to connect to the server via ssh using: `ssh firstname.lastname@example.org` (using the correct IP address - I get: `Permission denied (publickey,gssapi-keyex,gssapi-with-mic).` Any idea what I'm doing wrong? Does wheel group work with ssh keys at all?