UDP ports and firewalling

TTN Network and Services
17

Thank you for the clarification @kersing – so should it then be…?

Depending on which packet forwarder you’re using;

  1. 1700/udp (legacy/Semtech, incl “connection tracking” in iptables)
  2. 1883/tcp (Multi protocol packet forwarder)
  3. 1900/tcp + 1901/tcp (Go forwarder aka the “new packet forwarder”)

And also ;
1883/tcp or 8883/tcp (MQTT according to https://www.thethingsnetwork.org/docs/applications/mqtt/api.html)

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