lol I would open every port on my router and route them all to wireguard before I would ever consider doing this

I use Nextcloud with Nginx Proxy Manager and just use NPM to handle the reverse proxy, nothing in Nextcloud other than adding the domain to the config so it’s trusted.

I use Plex instead of Jellyfin, but I stream it through NPM with no issues. I can’t speak to the tunnel though, I prefer a simple wireguard tunnel for anything external so I’ve never tried it.

Edit: unless that’s what you mean by tunnel, I was assuming you meant traefik or tailscale or one of the other solutions I see posted more often, but I think one or both of those use wireguard under the hood.

I like the workflow of having a DNS record on my network for *.mydomain.com pointing to Nginx Proxy Manager, and just needing to plug in a subdomain, IP, and port whenever I spin up something new for super easy SSL. All you need is one let’s encrypt wildcard cert for your domain and you’re all set.