So, I have a few services (Jellyfin, Home Assistant, etc) that I am running, and have been acessing via their IP’s and port numbers.
Recently, I started using NGINX so that I could setup entries in my Pi Hole, and access my services via some made up hostname (jellyfin.home, homeassistant.home, etc).
This is working great, but I also own a few domains, and thought of adding an SSL cert to them as well, which I have seen several tutorials on and it seems straight forward.
My questions:
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Will there be any issues running SSL certs if all of my internal service are inward facing, with no WAN access? My understanding is that when I try to go to jellyfin.mydomainname.com, it will do the DNS lookup, which will point to a local address for NGINX on my network, which the requesting device will then point to and get the IP of the actual server.
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Are there risks of anything being exposed externally if I use an actual CA for my cert? My main goal is to keep my home setup off of the internet.
People can see what domains you use with TLS, but that could be OK: https://letsencrypt.org/docs/ct-logs/
If you use Let’s Encrypt, or any public CA, all of your domains and certificates will be public. You can use a wildcard to avoid revealing subdomains. There is a website that you can use to search what is available, but I don’t remember what it is.
I suspect there aren’t any serious risks to having that information revealed. The only real reason would be privacy against which services you are using on that domain.
