What is this?

This knowledgebase contains questions and answers about PRTG Network Monitor and network monitoring in general.

Learn more

PRTG Network Monitor

Intuitive to Use. Easy to manage.
More than 500,000 users rely on Paessler PRTG every day. Find out how you can reduce cost, increase QoS and ease planning, as well.

Free Download

Top Tags

View all Tags

Netflow V9 not working



We have setup a Netflow V9 probe/sensor. We have it set for port: 2055

We know the packets are flowing to the server which is a VM, because we used netflowtest.exe, but the information is not going into PRTG Network Monitor. Does anyone have any suggestions on how to remedy this.

Installed versions: Probe Service: V13.1.2.1463 Server Administration Tool: V13.1.2.1463 Probe Administration Tool: V13.1.2.1463

netflow netflow---sensor prtg

Created on May 31, 2013 4:09:34 PM

1 Reply




the sensor in PRTG is configured correctly?

what is the active flow timeout set to? From which device are you receiving Netflow data?

can you send the information from the Netflow Tester to

[email protected]?

Created on Jun 1, 2013 8:12:03 AM by  Aurelio Lombardi [Paessler Support]

Disclaimer: The information in the Paessler Knowledge Base comes without warranty of any kind. Use at your own risk. Before applying any instructions please exercise proper system administrator housekeeping. You must make sure that a proper backup of all your data is available.