Remote access a web application running behind a firewall. The app sets up a secure Nabto P2P connection to the Nabto tunnel app (reverse proxy) running in front of the web application. The web application is then fully accessible in the app if you have been granted access by the web application owner.
All communication is secured using strong cryptography. Only users that are in the target applications access control list can connect to the application: Either the owner can add users manually - or the tunnel app (reverse proxy) can be configured to allow local users to pair for later remote access.