Hi!
A couple of weeks ago I got my Pioner FreedomBox and apart from using it for hosting my private blog I wanted to also run my own matrix homeserver. Since my provider uses carrier-grade NAT I had some difficulties in setting up matrix federation via pagekite. It’s working now but I thought I share my setup. It might be helpful and maybe I could get some feedback on what could improved or if there was an easier way?
Here the drawing of my setup with some pros and cons how I currently see it.
And btw, thanks to the whole community for a great free software product! I ordered already a second box so I can keep one running and another one for experimenting 
Chris