SSH New user Ubuntu 14.04
Situation : i want to add a new user and disable the root login .
The new user will be a sudo user and on auth with the server it should only connect trough SSH no password auth . i followed multiple guides here on DO and did some googling myself but i fail at getting it all working . here are some steps i take .
i login as root : /usr/sbin/adduser username
i get prompted for a password and set one .
User privilege :
and add : username ALL=(ALL) ALL
i test and confirm that i can login with the new user with a password and i have sudo .
i login back as root and edit the sshdconfig file
next up is a question : should i set PermitRootLogin to No ? or to without-password ?
i see allot of people recommend to set it to no . So i do set it to NO
i add AllowUsers username
and restart sushi with service ssh restart
Logout and try to connect again with root get prompted for a password but no password was set because on creation of the droplet i added a SSH key . So things look okay Root user login is disabled .
And i can still login with the new user but only trough the password prompt .
THE PROBLEM : with the SSH key and password .
i add the ssh key cat ~/.ssh/idrsa.pub | ssh firstname.lastname@example.org"mkdir -p ~/.ssh && cat >> ~/.ssh/authorizedkeys
since the ssh-copy-id does not seem to work for me ( mac user )
next my terminal just prompts me with a > what do i do from here ?
i can paste the public key but how do i save it and next how do i disable the password login for the user and only auth on the ssh key .
Thank you in advance for the reply if anything i mention here above raises a security flag please let me know .