Comments on: A Discussion on Grub Security http://ubuntu-tutorials.com/2007/06/22/a-discussion-on-grub-security/ Enhancing your Ubuntu experience! Fri, 11 May 2012 05:04:26 +0000 hourly 1 http://wordpress.org/?v=3.3.2 By: Bob http://ubuntu-tutorials.com/2007/06/22/a-discussion-on-grub-security/#comment-8648 Bob Mon, 04 May 2009 00:22:24 +0000 http://ubuntu-tutorials.com/?p=355#comment-8648 Boot from an ubuntu live CD and changet it back Boot from an ubuntu live CD and changet it back

]]> By: abhi http://ubuntu-tutorials.com/2007/06/22/a-discussion-on-grub-security/#comment-3929 abhi Wed, 27 Feb 2008 14:40:21 +0000 http://ubuntu-tutorials.com/?p=355#comment-3929 I have just bought a Dell XPS ubuntu laptop. By this grave error I have forgotten my username and password. I am totally new to Ubuntu. How do I recover it or reset it? I have just bought a Dell XPS ubuntu laptop. By this grave error I have forgotten my username and password.
I am totally new to Ubuntu.
How do I recover it or reset it?

]]> By: Kevin Mark http://ubuntu-tutorials.com/2007/06/22/a-discussion-on-grub-security/#comment-1601 Kevin Mark Sat, 23 Jun 2007 02:33:16 +0000 http://ubuntu-tutorials.com/?p=355#comment-1601 as directhex wrote above, (debian and) ubuntu define runlevels 2-5 the same and default to runlevel 2. Some have asked that we comply with the Redhat-like standard, but alas it has been changed. as directhex wrote above, (debian and) ubuntu define runlevels 2-5 the same and default to runlevel 2. Some have asked that we comply with the Redhat-like standard, but alas it has been changed.

]]> By: Pierce Lopez http://ubuntu-tutorials.com/2007/06/22/a-discussion-on-grub-security/#comment-1605 Pierce Lopez Fri, 22 Jun 2007 15:49:51 +0000 http://ubuntu-tutorials.com/?p=355#comment-1605 And then, you'd need to lock your computer in a cabinet so one can't remove the bios memory battery or use a simple jumper to reset it... Basically, if someone has physical access to your computer, it's been compromised(unless you have a really, really good and inconvenient full drive encryption scheme). And then, you’d need to lock your computer in a cabinet so one can’t remove the bios memory battery or use a simple jumper to reset it… Basically, if someone has physical access to your computer, it’s been compromised(unless you have a really, really good and inconvenient full drive encryption scheme).

]]> By: Malcolm Parsons http://ubuntu-tutorials.com/2007/06/22/a-discussion-on-grub-security/#comment-1602 Malcolm Parsons Fri, 22 Jun 2007 15:10:09 +0000 http://ubuntu-tutorials.com/?p=355#comment-1602 In most other distributions, single user mode does ask for the root password. Ubuntu doesn't have a root password, so it cannot ask for it. There is no point in securing grub without also setting a BIOS password, or I can get a root shell by inserting a boot floppy / cd / usb flash drive. In most other distributions, single user mode does ask for the root password.

Ubuntu doesn’t have a root password, so it cannot ask for it.

There is no point in securing grub without also setting a BIOS password, or I can get a root shell by inserting a boot floppy / cd / usb flash drive.

]]> By: Liam Bedford http://ubuntu-tutorials.com/2007/06/22/a-discussion-on-grub-security/#comment-1604 Liam Bedford Fri, 22 Jun 2007 15:06:35 +0000 http://ubuntu-tutorials.com/?p=355#comment-1604 Ubuntu boots to sulogin by default, which means if there is a root password set, it will ask for it. You can even bypass that by appending "init=/bin/sh" to the bootloader, and then it doesn't matter what security you put on your machine, apart from drive encryption. Ubuntu boots to sulogin by default, which means if there is a root password set, it will ask for it.

You can even bypass that by appending
“init=/bin/sh” to the bootloader, and then it doesn’t matter what security you put on your machine, apart from drive encryption.

]]> By: directhex http://ubuntu-tutorials.com/2007/06/22/a-discussion-on-grub-security/#comment-1603 directhex Fri, 22 Jun 2007 14:54:46 +0000 http://ubuntu-tutorials.com/?p=355#comment-1603 Ubuntu uses runlevel 2 as default, not 5. Ubuntu uses runlevel 2 as default, not 5.

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