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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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Comprehensive guide to hardening RHEL clones? (lemmy.dbzer0.com)

submitted 6 days ago by marauding_gibberish142@lemmy.dbzer0.com to c/linux@lemmy.ml

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Is there some sort of comprehensive guide on hardening RHEL clones like Alma and Rocky?

I have read Madaidan's blog, and I plan to go through CIS policies, Alma and Rocky documentation and other general stuff like KSPP, musl, LibreSSL, hardened_malloc etc.

But I feel like this is not enough and I will likely face problems that I cannot solve. Instead of trying to reinvent the wheel by myself, I thought I'd ask if anyone has done this before so I can use their guide as a baseline. Maybe there's a community guide on hardening either of these two? I'd contribute to its maintenance if there is one.

Thanks.

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[–] marauding_gibberish142@lemmy.dbzer0.com 1 points 6 days ago

Thanks. You are correct, however since root is required for certain processes, I will use different users and doas for my needs.

I have realised that it is hard for me to justify the reason why I want to harden an OS for personal use. I gave privilege escalation out, but after reading your comment I have realised that that is not the only thing I am looking to "fix". My intention with running hardened_malloc was to prevent DoS attacks by malicious applications trying to exploit unknown buffer overflow situations, and LibreSSL and musl were to reduce the attack surface.

I agree with your comment though. I'm just wondering about how I can specify a reason (and why such a reason is required to justify hardening of a distro). I haven't found much of a reason for the existence of OpenBSD, Kicksecure, Qubes etc other than general hardening and security.