I am looking for either software, or an all-in-one hardware/firewall device that can monitor Internet traffic, and give a report (based on dates) of each computers total incoming and outgoing traffic (ie: Mb usage) to/from the Internet.
I envisage plugging in a hub between an existing ADSL Router and the network switch, then plugging A PC into that hub, thereby allowing it to monitor the traffic that passes through the hub to the ADSL Router. It then just needs to log the amount of data and the IP addresses so it can produce the report.
I do NOT need the software to be able block access to any sites. The software does need to be cost effective, and preferably an out of the box solution - I don't really have the time to be able to setup sniffer software, and analyse logs unless it is very simple...
The other option would be a hardware based firewall (like a Snapgear or similar) that all the traffic would pass through and enable me to log, but I haven't yet found one that can produce the type of report I require.