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this post was submitted on 06 Feb 2024
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Notifications on system file access
Notifications on root login/sudo
Declarative OS, tmpfs root, disabled sudo
Bastion server, but right now I don't have a proper router to do it at home
Yubikey, or a separate phone on Graphene OS for otp, keys, etc
Authelia + fascist fail2ban (or some CSF)
Most of these are pretty normal, but usually you don't do them all at once ๐ also, I don't really like hiding my services from the open internet, authelia is fine tuned to let people only access what they are supposed to. And regular users of my server usually don't notice that I even have it
I'd love to hear more about your Authelia setup. I'm using Authentik, but planning to do the same thing. I haven't opened my server up to the Internet yet (just built it on Friday), but what I'd like to do is have a webserver that supplies a login page, and you can't access anything else until you've logged in
I'm a Nixos user, I wouldn't be much help unless you do Nixos. But it's a whole new rabbit hole which would take you months/years to learn and setup ๐
What I can say, you can do "access from home network", "access from VPN network", "1fa/2fa from the internet" OR "access for / and /api, but 1fa/2fa for stuff like /admin, /admin-settings, or just /login or /logged-in"
Fail2ban is fun, also maybe have a look at crowdsec
Ah, yeah, I'm running Proxmox. And I'm definitely seeing I have a lot of research to do before I open up to the internet!
I'm actually not from the "close everything, don't open ports, always sit behind cloudflare" camp
We selfhost so we can use and share our services
There are other things we can practice instead of just isolationism and keeping everything as simple as possible
How do you change anything about the OS/do updates? iirc nixos requires elevated privileges for that?
There are many ways to do many things in nixos
For updates you can do automatic updates
Also, there are many deployment tools, like deploy-rs, morph, colmena, bento. They all have different approaches. Some you use ssh to deploy a remote system. Some just fetch the configuration and autodeploy it.
There are many ways how you can play with this. So you can disable sudo, and deploy with ssh only from some or a specified ip. Or you can keep ssh for root disabled and just deploy home-manager. It's really a lot, you imagination is the only limit
P.s. or you can just generate an image from a trusted machine, and flash it onto the device you want, unlimited number of ways