I have a Fortigate 100D firewall and I am trying to monitor Bandwidth through PRTG. I am trying to use NetFlow V5 sensor but it is not populating any data. If I turn off PRTG services and use NetFlow tester it sees packets reaching my PRTG server on the ports I have configured. As soon as I start up PRTG the NetFlow tester no longer receives any packets.

Fortigate config:

config system netflow
    set collector-ip 10.10.10.10
    set collector-port 9997
    set source-ip 10.10.10.1
    set active-flow-timeout 1
    set inactive-flow-timeout 15
    set template-tx-timeout 30
    set template-tx-counter 20
end

Article Comments

That's normal and expected behaviour, since one of the two needs to bind the port in order to receive flow packets. Could you provide a screenshot of the flow tester? I won't publish it, if you're worried about disclosing confident data. Please also provide screens of the sensor configuration.

Kind regards,
Stephan Linke, Tech Support Team


Feb, 2018 - Permalink