Many data centers disable direct root login to servers for security reason. You need to login first as a normal user than su to login as root.
But i like direct login as root. So i disabled this extra security on my servers. If some one can get my root password, they can also get my normal users password. So what i do is use complicated root password and keep it secure.
To enable or disable root login, you need to set this in /etc/ssh/sshd_config file.
# cd /etc/ssh # vi sshd_config
To disable direct root SSH login, you need to add following to /etc/ssh/sshd_config
PermitRootLogin no
To enable direct root SSH login, you need to add following to /etc/ssh/sshd_config
PermitRootLogin yes
After you do the changes, save and exit. Then restart sshd.
On FreeBSD
# /etc/rc.d/sshd restart
On Linux
# /etc/init.d/sshd restart
Now you will be able to login to SSH directly as root. I use RSA key for authentication, so just double click on the server entry will get me login, no passwords to remember. Only thing is i have to keep my Private Key secure.
原文取自: http://www.scriptinstallation.in/freebsd_permitrootlogin.html
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