Why does my flight simulator show that it is connected as a FreeFlight device?

UDP port 4000 is likely being used to send data to ForeFlight Mobile from your flight simulator. ForeFlight Mobile listens to this port for data from FreeFlight ADS-B receivers. When the app receives data via UDP port 4000, ForeFlight Mobile sees the data as being from a FreeFlight device.

Please check your network connection settings and make sure that the simulator is not using UDP Port 4000.