diff --git a/content/posts/linux/Desktop Linux Hardening.md b/content/posts/linux/Desktop Linux Hardening.md index cf009f2..ea0a974 100644 --- a/content/posts/linux/Desktop Linux Hardening.md +++ b/content/posts/linux/Desktop Linux Hardening.md @@ -287,7 +287,7 @@ _See ["2.2 Sysctl"](https://madaidans-insecurities.github.io/guides/linux-h Madaidan recommends that you disable [unprivileged user namespaces](https://www.containerlabs.kubedaily.com/LXC/Linux%20Containers/User_namespaces.html) due to the [significant attack surface for privilege escalation](https://madaidans-insecurities.github.io/linux.html#kernel). However, some software such as Podman and LXC relies on unprivileged user namespaces. If you wish to use such software, do not disable `kernel.unprivileged_userns_clone`. -If you are using Kicksecure or Whonix, most of this hardening is included by default. If you are using Debian, you should consider [morphing it into Kicksecure](https://www.kicksecure.com/wiki/Debian). On other distributions, you can copy the [configuration files from Kicksecure](https://github.com/Kicksecure/security-misc/tree/master/etc/sysctl.d) into `/etc/sysctl.d/` (but note that these configurations do not disable unprivileged user namespaces). There are also a few things in `30_security-misc.conf` to keep in mind: +If you are using Kicksecure or Whonix, most of this hardening is included by default. If you are using Debian, you should consider [morphing it into Kicksecure](https://www.kicksecure.com/wiki/Debian). On other distributions, you can copy the [configuration files from Kicksecure](https://github.com/Kicksecure/security-misc/tree/master/usr/lib/sysctl.d) into `/etc/sysctl.d/` (but note that these configurations do not disable unprivileged user namespaces). There are also a few things in `30_security-misc.conf` to keep in mind: - Apple filesystems are disabled. This is generally fine on non-Apple systems; however, if you are using an Apple device, you **must** check what filesystem your EFI partition uses. For example, if your EFI filesystem is HFS+, you need to comment out `install hfsplus /bin/disabled-filesys-by-security-misc`, otherwise your computer will not be able to boot Linux. - The `cdrom` and `sr_mod` modules are merely _blacklisted_ (can still be loaded at runtime with `modprobe`). If you have no intention to ever use CD‑ROM devices, they should be _disabled_ by *un*commenting the respective `install` lines. ([More about how this works on the ArchWiki](https://wiki.archlinux.org/title/Kernel_module#Using_files_in_/etc/modprobe.d/_2))