sending netflow to and external ntopng server - delays in flows

[andrema2]

Hi all

I'm sending Netflow data to an external (out of OPNSense box) server. The server is on the same network.
To be able to do that I just added another destination and Netflow in the report area.

The flows starts after a few seconds and I can see it at ntopng. After sometime, not sure how long, it start showing a message that the Remote probe clock drift. It goes to a point where it can't show flows anymore.

I have a feeling that there is a delay on the flows being send from OPNSense to Ntopng, and it gets bigger as time goes by. Does anyone use an external Ntopng server ? Do you see the same ? Have you solve it ?

Thanks

[andrema2]

No one facing something similar ?