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A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.

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How do you all handle security and monitoring for your publicly accessible services? (self.selfhosted)

submitted 2 weeks ago* (last edited 2 weeks ago) by a_fancy_kiwi to c/selfhosted

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This is a continuation of my other post

I now have homeassistant, immich, and authentik docker containers exposed to the open internet. Homeassistant has built in 2FA and authentik is being used as the authentication for immich which supports 2FA. I went ahead and blocked connections from every country except for my own via cloudlfare (I'm aware this does almost nothing but I feel better about it).

At the moment, if my machine became compromised, I wouldn't know. How do I monitor these docker containers? What's a good way to block IPs based on failed login attempts? Is there a tool that could alert me if my machine was compromised? Any recommendations?

EDIT: Oh, and if you have any recommendations for settings I should change in the cloudflare dashboard, that would be great too; there's a ton of options in there and a lot of them are defaulted to "off"

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[–] j4k3 5 points 2 weeks ago (13 children)

I've half ass thought about this but never have tried to actually self host. If you have access to all devices, why not just use your own self signed certificates to encrypt everything and require the certificate for all connections? Then there is never a way to log in or connect right? The only reason for any authentication is to make it possible to use any connection to dial into your server. So is that a bug or a feature. Maybe I'm missing something fundamental in this abstract concept that someone will tell me?

[–] a_fancy_kiwi 6 points 2 weeks ago (12 children)

If you have access to all devices, why not just use your own self signed certificates to encrypt everything and require the certificate for all connections?

Sounds like you are describing a VPN. I was using that setup before but small stuff like immich album sharing via a link won't work properly. Also, having to ensure a vpn is on and connected is a little to much to ask of my partner; they would turn it off and forget about it and then ask why their app wasn't working :/

[–] j4k3 2 points 2 weeks ago (8 children)

I mean more like a self signed TLS certificate with your own host manually set in the browser. Then only make the TLS port available, or something like that. If you have access to both(all) devices, you should be able to fully encrypt by bruit force and without registering the certificate with anyone. That is what I do with AI at home.

[–] a_fancy_kiwi 2 points 2 weeks ago (1 children)

oh, my mistake. tbh, I don't know enough about it but I'm interested. Why set up a TLS cert for AI at home? How is that benefiting you and your setup?

I've seen some people set up SSL certs for self hosted services and not make them publicly available but I didn't get around to seeing why they were doing it

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