Question : Internet Usage Tool

Hi Experts,
I have a couple of Small to medium business with around 10- 60 staff on each. I am looking for a good tool to monitor all internet usage on a daily basis. Reason being i have excess usage of internet over some of the companies and want to try and see where the bandwidth is going? I think webmarshal is too expensive and overkill.

Answer : Internet Usage Tool

ISA server is an excellent proxy of course, but for reporting you might need a third party. Unless you want basic reporting (i.e. only BW usage and no details on visited sites).