Prtg Free Version


PRTG Network Monitor's Freeware Edition is completely free for personal and commercial use. The Commercial Editions are required if you want to monitor more than ten sensors. PRTG is a one of the best network monitoring tools available today. It is has an easy to use interface and comes with great reporting capabilities. However, it works best only in Windows environment and is not open source. The free version allows you to monitor only up to 100 applications. Free Download Unlimited version of PRTG for 30 days. After 30 days, PRTG reverts to a free version. Or, you can upgrade to a paid license anytime. The PRTG Desktop app is free; you can simply download the software by clicking the download button below, and connecting it to your existing PRTG installations. You can manage up to two freeware or trial editions of PRTG with PRTG Desktop, and an unlimited number of commercial editions of PRTG.

  1. Prtg Free Version Features
  2. Prtg Network Monitor Download


Pdanet full version. I am exploring PRTG free version & trying to check application/port level network BW visibility from CISCO Router. i have configured flow export on CISCO router & able to get netflow on netflow tester but not in prtg.

while trying to add sensor under probe device, unable to see prtg server IP under 'Receive netflow packets on IP' & getting message as 'No Receive NetFlow Packets on IP available' which seems prtg is not listening for netflow.

Kindly suggest where to enable it.


Prtg Free Version Features

Hello Dhiraj,

Please try restarting the PRTG host and add a new NetFlow sensor then to see if it makes a difference. If you still experience the issue, please send us a support bundle ('Setup Contact Support') for further investigation.

Kind regards,


Hello Erhard,

Strange, after system restart able to see local IP under Receive NetFlow Packets on IP & able add netflow v9 sensor.

But now not getting netflow data on this sensor. CISCO Router shows correct flow export but not able to see under sensor.

i have below config on CISCO Router & prtg netflow v9 sensor end.

CISCO Router Configuration

ip flow-export source GigabitEthernet0/1 (WAN Port)ip flow-export version 9ip flow-export destination 2055ip flow-cache timeout active 1ip flow-cache timeout inactive 15

Probe Netflow v9 1 Sensor Configuration

Receive NetFlow Packets on UDP Port : 2055Sender IP : Flow Timeout (Minutes) : 3Receive NetFlow Packets on IP :

Kindly suggest what else need to be check to get netflow on prtg sensor.


Hello Dhiraj,

Flow Timeout in the sensor should be ideally one minute higher than what'S configured in the sending device. Also check with NetFlow Tester if you indeed see flows coming from ip, if not, the sensor won't process the data unless the ip matches or you can also leave 'Sender IP' empty, then it will process all flows coming in on port 2055, regardless of which sender.

Kind regards,


Hello Erhard,

Prtg free version downloads

Thanks for the response. i have removed Sender IP & started getting netflow data. My requirement is to get netflow data from multiple CISCO Routers under separate sensors. if will use netflow without sender IP, all data will get aggregate on single sensor & will not be able to see exact data from each sender.

It's strange if i remove sender IP, m getting netflow data but if i specify actual source, stopped getting. same source data i can see through netflow tool.


Hello Dhiraj,

Please send me an email ([email protected]) with the following details for further analysis:

  • Screenshots NetFlow sensor's 'Overview' and 'Settings' tab
  • Screenshots of NetFlow Tester after it was running for a few minutes and receiving flows (you need to pause the NetFlow sensor, otherwise NetFlow Tester cannot listen on the port)
  • Save decoded flows and templates in NetFlow Tester and attach them as well to the email.

Thank you in advance.

Kind regards,


Prtg Network Monitor Download


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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.