SSH to redhat host

How to configure a RedHat server such that ssh root@serverA will be rejected by the server, and while other account can be ssh to it. and user can only get root privilege when issue "su - " after ssh sccessfully.

Tks
AXISHKAsked:
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andreasSystem AdminCommented:
Open your sshd config file in

/etc/ssh/sshd_config

and add the following line (or uncomment if already there and set the option to no).

PermitRootLogin no

afterwards restart the ssh service.

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arnoldCommented:
Edit /etc/ssh/sshd_config
Look for rootlogin, set it to to deny which it should be by default.
You would need to restart sshd.

Insteàd of su, configure /etc/sudoers using visudo to grant users/group rights to run command in elevated mode using sudo and without the need to know root's password.
Gerwin Jansen, EE MVETopic Advisor Commented:
Keep a window open to that server as you are restarting the service. in case you make a configuration error you still have a session.  Backup the conf as well.
AXISHKAuthor Commented:
Tks
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