Or you could just use Tailscale with their Tunnel feature, and you get most of those things with their free tier (up to 3 users with up to 100 devices) and at a

Or you could just use Tailscale with their Tunnel feature, and you get most of those things with their free tier (up to 3 users with up to 100 devices) and at a cheaper per-user pricing after that. And it also works cross-platform.