Establishing a secure external connection to my home media and services?
What I'm trying to do:
I've recently set up a home media server (Jellyfin, Radarr, Sonarr, etc) and would like to be able to give external access to the Jellyfin server to a few family members. Additionally, I'd like to establish an internally and externally accessible dashboard (probably using Homepage) that facilitates access to various services (e.g. Sonarr, Radarr, qBittorrent), as well as Frigate's dashboard, and allows access to a separate Home Assistant box's dashboard.
Ideal set up:
The dashboard would be accessible through https://dashboard.lemtrees.com/. Individual services would be accessible directly through https://.lemtrees.com/ (e.g. https://sonarr.lemtrees.com/). Access to this dashboard should be safe and secure, and accessible from anywhere (i.e. not just my phone or a pre-approved device) if possible. Access to this dashboard would facilitate access to the Home Assistant box's HA dashboa
I'm familiar with the problem solving effort required. Home Assistant OS was a pain to set up due to some hardware issues in my first Intel NUC, so I can handle that. I appreciate you calling attention to it, as it can be daunting for someone unfamiliar with what they're about to face! That is, in part, why I'm seeking help here: I want to make a plan for avoiding as many issues as I can before venturing forth.
Home media server and Home Assistant OS: How to set up and configure?
I'm intending to set up a home media server PC for streaming to my TV (Jellyfin or Plex), which can also serve as a Home Assistant box. Over the last few months, I've picked up decent parts on sale (e.g. i5-12400, 32gb RAM, 4x 18TB HDDs, 1TB SSD), and they are all here. Presently I have Home Assistant running on an old Intel NUC, so I want to set up my media server PC to be able to take over Home Assistant duties when the NUC dies.
I'm a bit unsure here, so I am asking for advice on how to set all of this up with minimal fuss. A friend is encouraging me to just install Linux then Jellyfin/Sonarr/Radarr/SnapRAID/etc and simply buy a new NUC when the old Home Assistant box dies, and I'm inclined to go that route because frankly my work is mentally tiring and I don't have the willpower to fight a bunch of issues between software and systems I'm not familiar with. Having set up Home Assistant OS on the Intel NUC in the past, I have some limited experience with setting up Linux, us