Category Archives: Internet of Things (IoT)

Yamaha R-N500 Network Receiver Packet Capture

Last but not least I was interested which “home-calling” connections my Yamaha R-N500 Network Receiver initiates. In my previous post I already analyzed the open ports within the network, while I showed a complete Apple AirPlay capture here. This time I was only interested in outgoing TCP/UDP connections to the Internet as well as how the Yamaha App “NP Controller” communicates with the receiver.

It turned out that it was not easy for me to fully analyze such a packet trace even though only a couple of connections were made. It consists of many protocols that I am not familiar with such as UPnP, MDNS, SSDP, and RTP. Anyway, ere we go:

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Yamaha R-N500 Network Receiver Port Scan

During my analysis of Apple AirPlay connections to my Yamaha Network Receiver I was also interested in which TCP/UDP ports are opened on this audio device at all. Hence I did a basic port scan with Nmap for both transport layer protocols. (In an upcoming blogpost I am analyzing a packet capture from the Yamaha receiver which will show more details about the used ports and outgoing connections.) At first here are the Nmap results:

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Apple AirPlay Capture

I was interested in how Apple AirPlay works in my network. I am using an iPad to stream music to a Yamaha R-N500 network receiver. There is a great Unofficial AirPlay Protocol Specification which already shows many details about the used protocols. But since I am a networking guy I captured the whole process in order to analyze it with Wireshark.

Following is a downloadable pcap if you want to have a look at it by yourself as well as some Wireshark and NetworkMiner screenshots for a first glance.

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