I am trying to build a local network consisting of around 10-25 raspberry pis, each running on a static ip address. I wonder how I can monitor the traffic in the network. To be specific is there any tool I can use to monitor incoming and outgoing packets without generating extra network traffic?
Thanks a lot!
edit: Sorry that I might not have explained my question clearly. I am building an adhoc network with Pis only, no router. Each Pi communicates directly with other Pis. I want each Pi to monitor its own incoming and outgoing traffic to other Pis.