Howy howy. I'm looking for a program that can monitor data sent and received on any connection, on all computers on a network @_@
Anything like this available?
WireShark is the best network traffic monitoring tool out there and it's free.
Also remember you can only monitor traffic that comes "past" a specific PC. So if your router is doing some kind of smart routing (e.g. IGMP Snooping) and you aren't in the multicast group, you wont see that traffic.