What is port 12522 being used for?

FlightAware ADS-B Flight Tracking
1

I noticed I have two network processes from FlightAware. The normal outgoing TCP on port 1200 and also something on 12522.

bebuy.hou.flightaware.com:1200
bebuy.hou.flightaware.com:12522

or

206.253.80.197:1200
206.253.80.197:12522

2

Using ‘lsof -i’ I have determined that it is the MLAT client.

3

Yes, this is outbound UDP for mlat. The specific port used will change each time the main (TCP) connection reconnects.

4

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