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    Airplay 2 between two VLANs / Need of UDP rule from receiver to sender?

    Firewalling
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    • J
      j.koopmann
      last edited by

      Hi,

      I am running (or rather trying to run) Airplay across two VLANs:

      • Intern (with an iPhone as a sender) and
      • IOT (with an Airplay 2 receiver)

      I have UDP Broadcast Relay package running. mDNS seems to work. The sender/iPhone can see the receiver. There is an ANY/ANY allow from Intern -> IOT (TCP and UDP). However Airplay2 does not work. If I add a "IOT->Intern" rule with UDP high-ports it starts working right away. Wireshark shows some UDP traffic from the receiver to the sender at the beginning of the stream. Is this a known thing? Can it be overcome without having to open up tons of high ports?

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