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Signed-off-by: Tommy <contact@tommytran.io>
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Tommy 2023-01-30 08:14:47 -05:00 committed by GitHub
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content/posts/linux/Desktop-Linux-Hardening.md
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@ -483,7 +483,7 @@ On most desktop Linux systems, it is possible to create a [unified kernel image]
For Fedora Workstation, you can follow [H&aring;vard Moen's guide](https://haavard.name/2022/06/22/full-uefi-secure-boot-on-fedora-using-signed-initrd-and-systemd-boot/) which covers sbctl installation, unified kernel image generation with [dracut](https://wiki.archlinux.org/title/Dracut), and automatic signing with systemd&#8209;boot. For Fedora Workstation, you can follow [H&aring;vard Moen's guide](https://haavard.name/2022/06/22/full-uefi-secure-boot-on-fedora-using-signed-initrd-and-systemd-boot/) which covers sbctl installation, unified kernel image generation with [dracut](https://wiki.archlinux.org/title/Dracut), and automatic signing with systemd&#8209;boot.
On Arch, the process is very similar, though sbctl is already included in the official repositories and you will need to switch from [mkinitpcio](https://wiki.archlinux.org/title/Mkinitcpio) to dracut. Arch with linux&#8209;hardened works well with `sbctl`, but some level of tedious pacman hooks are required for appropriately timing the re&#8209;signing of all relevant files every time the kernel or bootloader is updated. On Arch, the process is very similar, though sbctl is already included in the official repositories and you will need to switch from [mkinitpcio](https://wiki.archlinux.org/title/Mkinitcpio) to dracut. Arch with linux&#8209;hardened works well with sbctl, but some level of tedious pacman hooks are required for appropriately timing the re&#8209;signing of all relevant files every time the kernel or bootloader is updated.
In my opinion, this is the most straightforward setup, with a lot of potential such as [systemd's future UKI plans including support for early&#8209;boot attestation](https://0pointer.de/blog/brave-new-trusted-boot-world.html). With that being said, it does not appear to work well with specialized setups such as Fedora Silverblue/Kinoite or Ubuntu with [ZSys](https://github.com/ubuntu/zsys). More testing is needed to see if they can be made to work. In my opinion, this is the most straightforward setup, with a lot of potential such as [systemd's future UKI plans including support for early&#8209;boot attestation](https://0pointer.de/blog/brave-new-trusted-boot-world.html). With that being said, it does not appear to work well with specialized setups such as Fedora Silverblue/Kinoite or Ubuntu with [ZSys](https://github.com/ubuntu/zsys). More testing is needed to see if they can be made to work.