Network discoverability / accessibility (DDNS, UPnP etc.)

[mycognosist]

@mhfowler

We're obviously not quite at the point of needing to focus on this but I figured I might as well open up a thread for discussion.

The main question here is: how do we make our PeachCloud device internet-reachable so that it can replicate with peers (SSB)? Perhaps a secondary question is: do we want to allow internet access to the web interface of PeachCloud devices?

Here's some early work by dinosaur:

https://github.com/peachcloud/peach-upnp
https://github.com/peachcloud/peach-dyndns-host

Other things to think about:

Security (e.g. UFW settings). Overlay networks (e.g. yggdrasil, cjdns).