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

Attention: This article is a record of a conversation with the Paessler support team. The information in this conversation is not updated to preserve the historical record. As a result, some of the information or recommendations in this conversation might be out of date.

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