With your personal firewall.
As I said earlier, I already know how to control inbound or outbound connections with Windows Firewall. What I mean is that I'm no longer able to do that, because OpenVPN seems to automatically suck in all outbound connections by default.
Let me elaborate more in detail. I have two adapters installed on my Windows 10—my wifi adapter(private), and TAP adapter(public). With Windows Firewall, I made sure that Internet Explorer can't use public adapters so that only the private adapters will be allowed. However, once connected to OpenVPN, Internet Explorer does not show a thing, indicating that the wifi adapter, which is the only one that is allowed, is not working properly. Do you have any idea that comes up in your mind?