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 Reports




I'm testing PRTG right now for my network monitoring. I have enabled netflow v9, but I can't find options to:

  1. Generate historical reports with filters like source or destination IP.
  2. Filter live netflow traffic by source or destination IP, or port.

I know that You can specify a filter when applying the sensor, but I would like to monitor/capture "everything" and then filter it out with some kind of display filter.

netflow netflow-v9 reports

Created on Nov 21, 2018 3:09:32 PM

Last change on Nov 22, 2018 11:41:13 AM by  Luciano Lingnau [Paessler]

1 Reply

Accepted Answer



Hello there,
we appreciate your contact.

I'm afraid that neither of these (#1 or #2) can be done with PRTG at the moment. For performance reasons, we only store data that is not excluded by filters. And data is not modified once it is stored.

This means that any filter that you configure in the sensor's settings only applies while it is active. And data stored to disk is static, it can't be refined further. In PRTG Toplists can give you a few other dimensions, if you're working with Netflow:

If you need more detailed insights about Netflow traffic, you might want to check Scrutinizer® by Plixer, one of our Alliance Partners.

Best Regards,
Luciano Lingnau [Paessler Support]

Created on Nov 22, 2018 1:21:26 PM by  Luciano Lingnau [Paessler]

Last change on Nov 22, 2018 1:21:59 PM by  Luciano Lingnau [Paessler]

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.