NtopNG v. 1.2.2 (r8210)
I'm seeing a huge inconsistency between what is displayed in a live flow
compared to what is displayed in a 5-minute historical flow on the same
interface during the same time frame.

This is all done using a second NIC, in promiscuous mode, sniffing traffic
on a mirrored port on a switch.

I've been experimenting with this a lot lately, and it's 100% reproducible.
I set my ntopng collector interface to eth1 (the sniffing interface).
Ntopng runs fine - and the live flows are very accurate. I use a test host
to download a very large 2.5 GB file from the internet. The live flow shows
this download very accurately. The download starts at 09:30 and takes just
over 5 minutes to complete. I wait until around 09:45 then I change the
ntopng interface to "Historical". I then load the data between 09:30 and
09:35. I then examine the flows; there is  _NOTHING_  there regarding that
huge 2.5 GB download. The host never shows up, the download itself is never
listed. Nothing.

Can you help me understand why this might happen?  I need the historical
dumps to be accurate for diagnostic purposes.

Thanks in advance,
Neil
_______________________________________________
Ntop mailing list
[email protected]
http://listgateway.unipi.it/mailman/listinfo/ntop

Reply via email to