I have a cisco router exporting netflow data on UDP 9509.
I have set up the sensor and it is not receiving data.
I made firewall exclusions and then even disabled the firewall, but no joy.
I have used the netflow tester on UDP 9509 and it shows data.
I'd expect the netflow tester to error when I load it without first stopping PRTG. It doesn't.
So I did a netstat-ano and I cannot see anything it listening on the udp9509. So the sensor seems not to be running. I restarted the probe service and rebooted the machine, still not listening.