I have been using Tailscale VPN with my servers for about 6 months now and I would recommend it to anyone.
I'm running it on both of my Proxmox machines, my laptop, a raspberry pi, and my Android phone. It makes it super easy and secure to access my local services while away from my house.
Very simple set up, minimal initial configuration, and versatile.
There are apps for Linux, Windows, Mac, Android, and iOS.
Is anyone else currently using Tailscale? I'd like to hear what you all think.
Does using headscale reduce the available functionality in any way? I read Tailscale's AMAZING article on NAT traversal and was wondering if that was impacted by moving to headscale in any way. Does headscale replace DERP too?
Headscale does have a built-in DERP server, and you can run standalone instances using code from tailscale (there are a bunch of docker images you can find on docker hub, or you can build one yourself), which you then have to include in Headscale's config. I've done this for a while, but I was running into connectivity issues when on the go using a mobile connection, so I've been falling back on Tailscale's instances for now. I should try again sometime.
I don't know the technicals that well, but I can see relays working if I run tailscale status. You don't get some enterprise/business features like access control, but I can be wrong.
You could checkout a very similar product, ZeroTier (Open Source Community Edition) assuming your use case is non-commercial.
... if you're willing to use an older release, you could potentially do whatever you want as the software uses a BSL license with a change date fallback license of Apache 2.0.