If you can selfhost and can use containers/docker, I wanna shamelessly plugin my solution: https://github.com/stratself/tswg. Basically mount a WireGuard config from Nord or any upstream VPN, and the container will tunnel traffic to said VPN when you choose it as an exit node.
There are other gluetun + tailscale solutions that are worth a look too
Let's Encrypt are rolling out IP-based certs, you may wanna follow its development. I'm not sure if it could be used for your forwarded VPN port, but it'd be nice anyhow
Edit: I believe encryption helps prevent tampering the data between the server and user too. It should prevent for example, someone MITM the connection and injecting malicious content that tells the user to download malware
I agree that the file sync is good. They (and owncloud afaik) are the only ones supporting virtual files on windows where you only download files when needed, saving storage space.
I suppose these fancy file features (bidirectional syncing, advanced conflict resolution etc) are targeted to the enterprise, not home users. So it's natural they'd include it with a bunch of bells and whistles that are half as good
Owncloud had a rewrite called oCIS (Owncloud Infinite Scale). Then it was bought by Kiteworks. Then many of the core devs switched to a new product/company called Opencloud. There's been quite some history over the past few years
Hey, glad you got it working. I'm late to the party, but I got a similar solution here: https://github.com/stratself/tswg. Basically just mounts your own wg.conf to the container and get Tailscale connected over it
Should've specifically asked the operators/hosters if they need a better answer. But this has more engagement so