If you are already using CurrPort to analyze which programs are accessing which ports, My Ports can scan which ports are open. This is useful if you know that ports is not supposed to be open. I will suggest advance level skills for using My ports.
2 more advantages you would get using my port is that it lists out the commonly exploited ports by trojans and ports used by services on your computer. This makes sure you dont close any of the ports accidentally.
You can read more about Software Ports here. Download My Ports (Via Ghacks)
