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Do you run a private CA? Could you tell me about your certificate setup if you do? (lemmy.world)

submitted 11 months ago* (last edited 11 months ago) by MigratingtoLemmy@lemmy.world to c/selfhosted@lemmy.world

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Hi, I was looking at private CAs since I don't want to pay for a domain to use in my homelab.

What is everyone using for their private CA? I've been looking at plain OpenSSL with some automation scripts but would like more ideas. Also, if you have multiple reverse-proxy instances, how do you distribute domain-specific signed certificates to them? I'm not planning to use a wildcard, and would like to rotate certificates often.

Thanks!

Edit: thank you for everyone who commented! I would like to say that I recognise the technical difficulty in getting such a setup working compared to a simple certbot setup to Let's Encrypt, but it's a personal choice that I have made.

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[–] InEnduringGrowStrong@sh.itjust.works 2 points 11 months ago (1 children)

I'm just doing mutual TLS to authenticate clients which I use the pricate CA for.
I could use the orivate CA for the server instead of lets encrypt and trust that on devices, but letsencrypt is easy enough and useful for other things that I open publicly. mTLS avoids needing a vpn for more sensitive services

[–] MigratingtoLemmy@lemmy.world 2 points 11 months ago* (last edited 11 months ago) (1 children)

Did you design your lab infrastructure to operate in a zero trust security framework? I'm very interested; I never really grasped mTLS, but I'm going to try and read more about it. Thanks!

Edit: Alright, I understand the high-level concept of mTLS. Just need to check the implementation details with my reverse-proxy

[–] InEnduringGrowStrong@sh.itjust.works 1 points 11 months ago

Not really, although now that I have certs for those anyway, maybe I should.
More like I'm using some services on the go that I want to always work, whether I'm on the LAN or on the go.
Opening home automation or 3d printers to the Internet is unwise to say the least.
mTLS in the reverse proxy for those allows me to have more security without having to establish a VPN first.