Network monitoring?

Hello sense programming still not my strong area. But I'm still lerning and still trying. A friend of mine came up to me and asked Is it possible to monitor incoming and outgoing traffice on the network from his computer? So i was curious my self is that possible and has anyone tried it before? I'm looking for some starter points but not sure where to even begin. I never did anything like it for programming incoming and outgoing traffice on a home network.

Joseph

Wireshark

^^^ +1

The typical Arduino isn’t fast enough to handle or even pass-through the traffic on the simplest network.