Linux per program firewall similar to windows and mac counterparts -

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  1. Is it possible to create a GUI firewall that acts as a Windows and Mac counterpart? Per program basis Popup Notification Window When want to send \ recv data to specific program network
  2. If not, why? Does such a Linux kernel not allow the existence of such programs?
  3. If so, why is not such a program?

    This is a programming question, not a user.

    To answer your third point there are programs that give zuber popup, it is a leopard flower Is called:

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