Bandwidth Monitoring program

[Benjamin Adams]

I'm on a network that has a normal store firewall, setup as a NAT.  I'm
trying to find a way to monitor all bandwidth by clients through that
firewall.  I don't have the ability to just put an inline box to examine
packets.  Is there a program where I can see whats going on from the
computer on that network.

What I'm looking for is:
client ip : 2.3 GB
List of ports used in bandwidth amounts.


Thanks for any help,
Ben Adams