Wednesday, December 2, 2009

Monitor bandwidth with Netflow and PRTG(PFSENSE)


*NetFlow Analyzer is a, web based (no hardware probes), bandwidth monitoring, network forensics and network traffic analysis tool that has been optimizing thousands of networks across varied industries for peak performance and helping them to put their bandwidth for a better use. NetFlow Analyzer is a NetFlow, sFlow, JFLow (and more) collector, analyzer and reporting engine integrated together. With close to 4000 enterprises using NetFlow Analyzer for an in-depth visibility into their network traffic and its patterns, NetFlow Analyzer continues to earn trust of more users by giving business knowledge of real-time network behavior and how traffic impacts the network's overall health.

*PRTG Traffic Grapher is an easy to use Windows software for monitoring and classifying bandwidth traffic usage. It provides system administrators with live readings and long-term usage trends for their network devices. The most common usage is bandwidth management, but you can also monitor many other aspects of your network like memory and CPU utilizations.


Step 1:install pfsense as normal

Step 2:install Service pfflowd(system->Packages chose pffflow click icon "+")

Step 3:Config Service pfflowd in pfsense (services -> pfflowd) and config as image with Host(address of machine install netflow) and click save

Step 4:config Service SNMP for PRTG(Services -> SNMP check enable as image )

Step 5 :install PRTG and Netflow .

Download PRTG:

install PRTG and Netflow auto

Step 6:restart pfsense

Step 7:Test
from download check status prtg and netflow


  1. Thanks for the great step-by-step. Very helpful. Another good NetFlow analyzer to try is Scrutinizer. I've been using the free version and it looks like a good tool.

  2. Thanks for sharing.If your system use <=2 Gateways .You can use netfow because free version can monitor 2 sensors

    Once again,Thanks for sharing

    Thanks and best Regards


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