Vote for TrafficQuota
TrafficQuota is a quota enforcement extension for Microsoft ISA Server. It enables you to restrict or allow users' access to the Internet, based on the volume of data downloaded (or uploaded) from the Internet. Features include: Quota policies are based on the volume of downloaded or uploaded data and time period per user, The entire traffic is controlled, Closely integrated with ISA Management Console and all changes are activated immediately, without ISA services' restart, amongst others.