No port is open

[DKentoy]

Hi.
I have installed pfSense recently. I'm not good to pfSense, but no matter what kind of port I'm trying to scan, I'm getting a message that the port is closed. What should I do to check?

[viragomann]

On WAN interface? That's the default behavior.

To open a port add a NAT port forwarding rule to a device which is listening on the target port.