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Remove bluetooth kernel module

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Signed-off-by: Tommy <contact@tommytran.io>
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Tommy 2023-11-10 16:23:19 -07:00
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content/posts/linux/Desktop Linux Hardening.md
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@ -271,7 +271,6 @@ Madaidan recommends that you disable [unprivileged user namespaces](https://www.
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/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:
- The `bluetooth` and `btusb` kernel modules are disabled. You need to comment out `install bluetooth /bin/disabled-bluetooth-by-security-misc` and `install btusb /bin/disabled-bluetooth-by-security-misc` to use Bluetooth.
- 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. - 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&#8209;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)) - 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&#8209;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))
- To produce informative errors when utilising the configuration file, all 10 of the corresponding [debugging scripts](https://github.com/Kicksecure/security-misc/tree/master/bin) should be copied into `/bin/`. - To produce informative errors when utilising the configuration file, all 10 of the corresponding [debugging scripts](https://github.com/Kicksecure/security-misc/tree/master/bin) should be copied into `/bin/`.