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Preventing Root Login

I inherited a Redhat Linux system to administer.  While I'm nobody's Sysadmin (network is my thing) - I do know that direct login using "root" is generally a no-no.  Right?  That's how the previous owner would SSH to the box - using "root" for user name.  How do I prevent direct access with "root" and but make sure I don't log myself out of any essential access.  My guess is first I can log in with my own UID and su to root and make sure that is all cool.  (It is.)  But then how do I prevent direct root login?
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amigan_99
Asked:
amigan_99
1 Solution
 
TuxxCommented:
Logging in as root in GUI i usually prohibited by most distros. However, in the bootloader it is allowed. You will need to enter the GRUB prompt and follow the instructions on the page to lock access to the CLI root boot entry.
http://www.gnu.org/software/grub/manual/html_node/Security.html
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fosiul01Commented:
check this question :

http://www.experts-exchange.com/Security/Operating_Systems_Security/Linux/Q_23604111.html

you can use key authentication instead of using direct root access by ssh
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StrongBad_RulesCommented:
There are a variety of ways to answer that question, but here is a good place to start:
http://www.redhat.com/docs/manuals/linux/RHL-9-Manual/security-guide/s1-wstation-privileges.html

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amigan_99Network EngineerAuthor Commented:
Perfect - thank-you.
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