I'm using w2k pro, and I have noticed recently alot of activity in the form of sent/received packets in the network connection status window. I'm running a home lan with a broadband wireless router. I have 2 computers hard wired to the router and I have the wireless part set to only accept connections from approved mac addresses (none).

Since I'm fairly confident nobody is wirelessly hacking into my lan, maybe some background process is creating the network traffic. Even when no programs are open on either computer I'm seeing about 1 packet sent per second and slightly less for packets received.

1. Is there a way to find out what (if any) programs/processes are sending/receiving network traffic? Any freeware or windows utils?

2. Is this possibly normal network traffic being created by the broadband router? (never really checked before now)

Any suggestions?