Checking open ports can be done using built-in tools like Command Prompt or PowerShell, which list active ports and the ...

Press "Windows-R" to open a Run box. Type "cmd" -- without quotes here and throughout -- in the "Open" field, then press "Enter." If a User Account Control message displays, click the "Yes" button. A ...

Port forwarding will open specific ports used by specific services in order to make communication more seamless. UPnP can do this automatically in some cases, as outlined above, but sometimes it can ...