Control inputs and outputs (oversee)

Hi:

Where I have to go to see the inputs and outputs that occur in my pc. I mean, I like to know what programs are connected to the Internet, also to IP addresses, and IP addresses you want to connect with my pc.

Is not that the main thing a firewall? All other options I almost abound.

Greetings.

I’m sorry, I just try Comodo gadget by clicking shows all this traffic.