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Add details regarding the blocking of CD-ROM kernel modules

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Raja Grewal 2022-11-09 21:10:58 +11:00
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content/posts/linux/Desktop-Linux-Hardening.md
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@ -249,6 +249,7 @@ If you are using KickSecure or Whonix, most of these hardening have already been
Note that these configurations do not disable unprivileged user namespaces. There are also a few things in `/etc/modprobe.d/30_security-misc.conf` to keep in mind: Note that these configurations do not disable unprivileged user namespaces. There are also a few things in `/etc/modprobe.d/30_security-misc.conf` to keep in mind:
- The `bluetooth` and `btusb` kernel modules are disabled by default. You need to comment out `install bluetooth /bin/disabled-bluetooth-by-security-misc` and `install btusb /bin/disabled-bluetooth-by-security-misc` if you want to use Bluetooth. - The `bluetooth` and `btusb` kernel modules are disabled by default. You need to comment out `install bluetooth /bin/disabled-bluetooth-by-security-misc` and `install btusb /bin/disabled-bluetooth-by-security-misc` if you want to use Bluetooth.
- Apple filesystems are disabled by default. This is generally fine on non-Apple systems; however, if you are using Linux on an Apple product, 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 into Linux. - Apple filesystems are disabled by default. This is generally fine on non-Apple systems; however, if you are using Linux on an Apple product, 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 into Linux.
- The `cdrom` and `sr_mod` modules are only blacklisted by default. If you have no intention to ever use CD-ROM devices they should be disabled. To implement this, at the bottom of the configuration file 'uncomment' both install (disable) commands and 'comment out' both existing blacklist commands.
### Harding Boot Parameters ### Harding Boot Parameters