How do I monitor packets to and from a specific MAC on my LAN?

I have a small LAN with a few Wifi IP cameras. I want to monitor the number of packets sent to and from a specific Wifi IP camera. I want to do this from another computer with a different LAN address. Preferably I would like to see the number of packets sent and the time the activity occurs. Is there software to do this? Do I have to have this software or capability on the router?