Why would I want to give my credit card to a company to access my files behind a CGNAT? So AWS can decide to charge me $10,000 someday arbitrarily? So my servers get summarily yanked with no transparency?

Tailscale: I don't want to install a corporation's client.

Yggdrisil: "The current implementation of Yggdrasil is a lightweight userspace software router which is easy to configure and supported on a wide range of platforms. It provides end-to-end encrypted IPv6 routing between all network participants." Yeah, not what I need and too-much-access.

Install Headscale.

No corporation, fully endorsed by Tailscale.