how can I disable single user mode

divyashree · 10-18-2008, 06:37 AM

Hello plz help me.I've rhel5 installed in my labpc.Can I disable to enter in single user mode,so that my friends cant change the root passwd at booting time..

win32sux · 10-18-2008, 07:11 AM

Quote:

Originally Posted by divyashree

Hello plz help me.I've rhel5 installed in my labpc.Can I disable to enter in single user mode,so that my friends cant change the root passwd at booting time..

Doesn't your bootloader come with instructions on how to achieve this?

divyashree · 10-18-2008, 09:23 AM

Quote:

Originally Posted by win32sux

Doesn't your bootloader come with instructions on how to achieve this?

Oh you means giving password for boot loader or anythingelse

win32sux · 10-18-2008, 09:30 AM

Quote:

Originally Posted by divyashree

Oh you means giving password for boot loader or anythingelse

I was thinking more like eliminating the ability for users to choose anything other than what comes up on the menu.

jschiwal · 10-18-2008, 09:56 AM

You can password protect the grub shell and individual menu items.

Also check the "S" entry in inittab:

Code:

              # What to do in single-user mode
              ls:S:wait:/etc/init.d/rc S
              ~~:S:respawn:/sbin/sulogin

sulogin requires the root password.
See the grub info file (section 9) and the inittab man page.

If the lab computer can be booted from CD or USB or floppy, they could boot up, running a live distro and access files that way.

divyashree · 10-18-2008, 01:04 PM

Quote:

Originally Posted by win32sux

I was thinking more like eliminating the ability for users to choose anything other than what comes up on the menu.

hello brother during boot time there is no user like root or other, as any user have d ability to choose the boot menu,so how can I eliminate d ability of users to choose anything other than what comes up on the menu ?? how ??

win32sux · 10-18-2008, 01:09 PM

Quote:

Originally Posted by divyashree

hello brother during boot time there is no user like root or other, as any user have d ability to choose the boot menu,so how can I eliminate d ability of users to choose anything other than what comes up on the menu ?? how ??

Like I hinted at before, this should be covered in your bootloader's documentation. If you want to see if someone can provide you with a quick summary of the steps involved, you'll need to at least tell us what bootloader you are using.