My ISP setup a IP Flow on the router going to our external ip address and port number.
How would add interface to monitor traffice with NetFlow Analyzer?
If your device is set up to send the NetFlow data to a specific IP address, you need to run the NetFlow Analyzer there. You can select port for listening in the application. It should automatically detect the incoming data. If not, you may need to add the device manually in the application. If that does not help, use Wireshark to analyze the incoming traffic from your device to see whether there is actually anything coming in.
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