GUI Tool Displays the Status of TCP and UDP Ports

Download and install PortQueryUI on your local computer. (The PortQueryUI download includes the portqry.exe command-line toolin case you're running an older Windows OS version.)

Go to the C:PortQryUI folder on your local system and run portqueryui.exe.

In the Port Query dialog box, enter the destination IP address or Fully Qualified Domain Name(FQDN) to query. In this case, you can enter 127.0.0.1 or localhost.

Select Manually input query ports and type 443 in the Ports to query field. (By default, TCP is selected in the Protocol drop-down list.)

Click the Query button. The status of port 443 is displayed in the bottom pane of the Port Query dialog box, as Figure 1 shows.

Figure 1: Using PortQueryUI to Display the Status of Port 443