You've blocked the port, but that does not prevent a process/program from binding to it.
So, you have a program listening on the port, but it will never get any traffic because you have blocked that traffic from ever reaching it.
You've blocked the port, but that does not prevent a process/program from binding to it.
So, you have a program listening on the port, but it will never get any traffic because you have blocked that traffic from ever reaching it.