Listen UDP flows


I'm trying to read UDP dataframes (below snap from WS):


The private IP is from the running VB instance and the public one, an external PC.

This is my flow:

[{"id":"96e009b8.b4f988","type":"tab","label":"Flow 1","disabled":false,"info":""},{"id":"5a9c52e7.691eb4","type":"udp in","z":"96e009b8.b4f988","name":"","iface":"","port":"445","ipv":"udp4","multicast":"false","group":"","datatype":"buffer","x":270,"y":220,"wires":[["f4d208fe.602ed8"]]},{"id":"941f2b66.6ff6e8","type":"debug","z":"96e009b8.b4f988","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","x":870,"y":580,"wires":[]},{"id":"f4d208fe.602ed8","type":"binary","z":"96e009b8.b4f988","name":"","property":"payload","pattern":"x32,l32f","x":730,"y":440,"wires":[["941f2b66.6ff6e8"]]}]

How can I capture those dataframes?


Not quite clear what you are trying to do. You can use the udp nodes if you (node-red) are the target of the udp message - are you ? Or if you are the external PC ?

If not then do you mean you want to try to sniff the packets between those boxes ? In which case maybe try node-red-contrib-pcap node for packet capture - but you may need a) root privileges to access the ports and b) teh adapter may need to be in promiscuous mode.

@dceejay, yes, the VB Ubuntu is, the one generating the UDP dataframes.

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