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Lock down Linux for the workplace
(kbin.social)
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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You will need to configure secure boot with your own keys, efistub and create a user with no sudo.
After that any selinux or apparmor distro will do.
What you are concerned about here is physical security so you will need to lock the bios, cut off the CMOS reset pins and probably solder the 3.3 battery.
Thank you!