From ICC Software:
Internet DeadBolt monitors and restricts all Web sites that are not authorized by the administrator, and only allows authorized applications to be used. This will allow you to know if your employees are working or just talking on the phone or to each other and not being productive. With the Internet DeadBolt you can reduce your network and computer assets exposure to viruses and other malicious software, because IDB will not allow your employees to go to download sites without your permission. The IDB also blocks chat, IM interactions, ports, and TCP/IP.