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[] On Behalf Of Simone Mainardi
Sent: Wednesday, April 11, 2018 9:18 AM
Subject: Re: [Ntop] ntopng DPI Question


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On 11 Apr 2018, at 16:53, Terry Duchcherer 
<<>> wrote:

We are a small ISP looking to get more insights into our network traffic. We 
have setup ntopng (Community Edition) monitoring an ethernet interface that is 
being mirrored on a Juniper switch. The peak traffic on this interface is about 

Traffic levels look correct, and we are definitely seeing host insights.

However, nDPI does not seem to be recognizing applications as well as I would 
have expected. While it shows things like YouTube, Windows Updates, and Bit 
Torent, it seems to miss things like NetFlix. I know our customers are using 
NetFlix, other solutuions have shown this to be about 35% of our total traffic.

Top Application Protocols shows:
                HTTP 28%
                Other 24.6%
                SSL 24.5%
                YouTube 12.8%
                Unknown 5.7%
                Facebook 4.4%

Is there tweaking required to make nDPI more accurate?

Please, attach/upload a pcap file with traffic that is supposed to be Netflix 
but is not detected by nDPI so we can check and see if there's something we 
should change in the deep packet inspection engine to improve accuracy.

If we decide to move ahead with ntopng, it will be placed at our network edge 
with traffic levels over 2Gbps and climbing.

Thanks in Advance for any help.
Terry D.

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