Re: [CentOS] RHEL5 and CentOS 5 root logins

2007-08-08 Thread Jim Perrin
On 8/8/07, Scott Ehrlich <[EMAIL PROTECTED]> wrote:
> I found, under a 64-bit CentOS 5 workstation install, it is possible to
> modify /etc/inittab and add a couple of lines to prevent root from logging
> into the console.
>
> I found, under a 64-bit RHEL 5 server install, adding the same two lines
> completely breaks the OS, to the point that a reboot after the lines are
> added, the OS brings you to a fsck-like prompt, and other things break,
> too.  I didn't have time to look at the logs for specifics, if any were
> recorded.

That's rather odd. The two files are (or should be) identical.


> Does anyone know if a CentOS 5 server install option permits locking out
> root from console login?   Does anyone know of a way, in RHEL 5 Server
> edition, to prevent root from a console login?

You can edit /etc/securetty, which controls what root is allowed to
log in from. In reality, I'd leave the console there, but block ssh
and most of the other ones. You'll want root access at the console if
something catastrophic happens and you need to recover. If they've got
local access to the machine, it's basically theirs anyway.

While you're using centos5, most of these ->
http://centos.org/docs/4/html/rhel-sg-en-4/s1-wstation-privileges.html
 should work just the same for you.


-- 
During times of universal deceit, telling the truth becomes a revolutionary act.
George Orwell
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Re: [CentOS] RHEL5 and CentOS 5 root logins

2007-08-08 Thread Daniel de Kok
On Wed, 2007-08-08 at 06:58 -0400, Scott Ehrlich wrote:
> I found, under a 64-bit CentOS 5 workstation install, it is possible to 
> modify /etc/inittab and add a couple of lines to prevent root from logging 
> into the console.

/etc/securetty is the right place to configure this, see the
securetty(5) manual page and
http://www.centos.org/docs/5/html/Deployment_Guide-en-US/ch-sec-network.html#s1-wstation-privileges

-- Daniel

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[CentOS] RHEL5 and CentOS 5 root logins

2007-08-08 Thread Scott Ehrlich
I found, under a 64-bit CentOS 5 workstation install, it is possible to 
modify /etc/inittab and add a couple of lines to prevent root from logging 
into the console.


I found, under a 64-bit RHEL 5 server install, adding the same two lines 
completely breaks the OS, to the point that a reboot after the lines are 
added, the OS brings you to a fsck-like prompt, and other things break, 
too.  I didn't have time to look at the logs for specifics, if any were 
recorded.


Does anyone know if a CentOS 5 server install option permits locking out 
root from console login?   Does anyone know of a way, in RHEL 5 Server 
edition, to prevent root from a console login?


Thanks.

Scott
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