Free Program to take netflow

Mike Hammett nanog at
Mon May 20 16:03:00 UTC 2019

I've done that a couple ways. I've used a nProbe license to add the ASN information in. There are other utilities that do this, but I forgot what they are. 

Mike Hammett 
Intelligent Computing Solutions 


----- Original Message -----

From: "Dennis Burgess via NANOG" <nanog at> 
To: nanog at 
Sent: Monday, May 20, 2019 8:36:47 AM 
Subject: RE: Free Program to take netflow 

Please let me clarify. Currently the Netflow data that this customer is sending does NOT supply AS information. So I need something to generate that AS data and display. The goal is to figure out where we need to peer next. Where the top traffic is coming in from (what AS) on our paid transit. 

Dennis Burgess, 

From: NANOG <nanog-bounces at> On Behalf Of Dennis Burgess via NANOG 
Sent: Friday, May 17, 2019 9:27 AM 
To: nanog at 
Subject: Free Program to take netflow 

I am looking for a free program to take netflow and output what the top traffic ASes to and from my AS are. Something that we can look at every once in a while, and/or spin up and get data then shutdown.. Just have two ports need netflow from currently. 

Thanks in advance. 

Dennis Burgess 

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