Windows 10 script to enable/disable TCP port

I want to simulate Oracle disconnect for my app. I need to enable/disable outgoing traffic to port 1521 quickly.

I think the best way is to add/remove a rule into the Windows Firewall.

Is there a CMD or PowerShell scrip I can use? Or WMI in C#?

(Note: I cannot disable networking as a whole because there are different connections are used in my code and only 1521 needs to be disabled).