One comment I'll make because it's kind of buried in the first paragraph and not really called out: this project is one of the very early adopters of Trevor Perrin's state-of-the-art Noise protocol framework design <a href="https://noiseprotocol.org/" rel="nofollow">https://noiseprotocol.org/</a>, so you're looking at something <i>dramatically</i> more modern, auditable and (potentially) secure than older, hairier protocols like IPsec, TLSv1.2, OpenVPN, etc.<p>Best of luck, Jason!