Logging internet usage.

[HuggyBear]

My boss wants me to set up the firewall to log internet usage for my department. What would be a good way of doing this? Any suggestions on programs I could use? I use iptables for the fire wall and I can log all destination requests going to ports 80 & 443 but just wondered if there was something better.

Thanks
Jamin

AFAIK, you could use QoS or maybe Quotas - But I don't have any XP with that sort of stuff