Hi, I’m in a process of making fast, (extrenely) secure, and modern laptop. Currently I have Arch Linux with encrypted root partition (unlocked with Nitrokey or long password), secure boot, linux-hardened, firewalld, etc.

I’m running linux-hardened with custom config. I enabled AMD SME, kernel lockdown, added some xanmod patch for more specific cpus, and disabled some unnedded drivers (only those that I’m 100% sure I don’t need - Intel, NVidia, Microsoft, Google, Amazon, Virtio). Currently it takes ~50 minutes to recompile the kernel. Are there any tutorials what drivers to disable to speed up this process? After doing that I will try to compile it with -O3 and LTO. Do you know any patches for performance?

I’m planning to enable encrypted swap, install ClaimAV and install flatpak versions for every non open-source app I have.

I also want to have SELinux. Does anyone know where can I learn it? I had it on Fedora and it was not fun using it.

What are other ways I can make my laptop more secure?

  • vatson112@lemm.ee
    1·
    9 months ago

    There are also some kernel settings that you may find useful. Currently I am on the mobile and cannot remember the names. Text me if you need help

    Network:

    Enable rp and arp filter

    Disable IP forwarding if you don’t use docker

    Disable tcp timestamp

    Disable icmp broadcast

    Enable syncookies

    Enable source route checking

    Other:

    Enable hard and soft link protection (it is may broke your system, use carefully)

    Enable kptr restrict

    Disable kexec

    Disable sysrq

    Enable randomize virtual memory address

    Disable JIT for ebpf programms

    Disable loading drivers via modprobe in live kernel.

    Also check which hardware mitigations is disabled in your kernel. (Spectre, meltdawn) You may enable KASL

    Also use selinux or apparmor. I prefer Selinux.

    Enable auditd and configure it for auditing actions that your find useful.