NGROK
Web site for ngrok documentation: https://ngrok.com/docs
To install ngrok on the Pi, use this command:
sudo apt-get update
sudo apt-get install ngrok-client ngrok-server
Syntax to invoke ngrok:
ngrok http -subdomain=peachwinepi -auth="julie:357" 80
This should make port 80 visible at https://peachwinepi.ngrok.com