In the way OP suggests, it is; it's kind of like Zonealarm (I have no clue if that still exists; I haven't used Windows for a long time); so it will block a pro

In the way OP suggests, it is; it's kind of like Zonealarm (I have no clue if that still exists; I haven't used Windows for a long time); so it will block a process before sending it and asking the user for permission to send something to X.com. It will do that with every change of X.com. You can allow your process everything of course, but it was convenient enough to block most everything evil while letting through only what I wanted without giving my dev (or any other processes) permission to send to ..