I know I’m ostentatiously late to this understanding, but boy, Tailscale is pretty cool. I had been tinkering with making Navidrome available via Synology’s reverse proxy, kept failing to get it working, and finally just installed the Tailscale package. I logged in on the Synology, logged in on my phone, and — just like that — can reach my server from the grocery store parking lot on my iPhone. This living in the future is pretty good, sometimes.