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This article addresses the issue where there is no NetFlow data from a specific node.
All NTA versions
This can occur because of the following reasons:
These types of issues need to be investigated using Wireshark or other similar packet analysis software.
Collect a Wireshark capture on the Orion server and configure the capture filter as follows:
If there are no packets detected, then there is no NetFlow data getting to the Orion server. This indicates that this issue is external to Orion / NTA and needs to be investigated by user.