Public vs Private in Lorawan Node

Hello,

I am testing a Lorawan Node, in which I am testing its Public and Private Network Feature.
But, When I Disable Public Network in Node, I am unable to get data on gateway and Server.

Is there any configuration need to be done with Gateway or Server to get this Data.

Yes, however that is not in scope for the TTN forum as TTN is a public network.

Suggestion: read up on the difference between public and private networks.