03-11-2012
Hi there!! Interesting work!!
A simple thing would be to lock the root account by deleting the password entry in /etc/shadow and not allowing the user to use sudo. May be you can work on SELinux to implement something like RBAC which is more secure. Also, you gotta change the run levels so that the user cannot get into single user mode from GRUB menu.
But have you given a thought about these?
1. Will a user be intended to reboot the system to boot into the Live media, just for browsing on the Internet securely?
2. The description on the site says the distro is secure because it's based on Read-only DVD. But this is not the fact. During the boot, the initramfs is loaded into the RAM and it acts like as if it's booted off a hard disk. You can still read/write once you boot into the OS (otherwise it would never work).
Anyways, it's a good effort in a direction people might not have thought of yet. So best of luck!
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LEARN ABOUT CENTOS
grub-reboot
GRUB-REBOOT(8) System Administration Utilities GRUB-REBOOT(8)
NAME
grub-reboot - set the default boot entry for GRUB, for the next boot only
SYNOPSIS
grub-reboot [OPTION] MENU_ENTRY
DESCRIPTION
Set the default boot menu entry for GRUB, for the next boot only.
-h, --help
print this message and exit
-V, --version
print the version information and exit
--boot-directory=DIR
expect GRUB images under the directory DIR/grub instead of the /boot/grub directory
MENU_ENTRY is a number, a menu item title or a menu item identifier. Please note that menu items in submenus or sub-submenus require speci-
fying the submenu components and then the menu item component. The titles should be separated using the greater-than character (>) with no
extra spaces. Depending on your shell some characters including > may need escaping. More information about this is available in the GRUB
Manual in the section about the 'default' command.
REPORTING BUGS
Report bugs to <bug-grub@gnu.org>.
SEE ALSO
grub-set-default(8), grub-editenv(1)
The full documentation for grub-reboot is maintained as a Texinfo manual. If the info and grub-reboot programs are properly installed at
your site, the command
info grub-reboot
should give you access to the complete manual.
grub-reboot (GRUB) 2.02-2ubuntu8.3 July 2018 GRUB-REBOOT(8)