The server in itself – is a router based on an ordinary PC with built-in HTTP proxy server and mail server SMTP. In addition to basic features (IP routing packets), are working on counting, under different categories (bandwidth consumption, the use of mail), with the IP address of the recipient and sender, controlling, so the outgoing and incoming traffic. Application is statistics, which, with necessary, can be derived for the study in order to control the actions of the companies on the Internet, for example, the daily statistics shows data on users, groups, URL, by site, so you can bring top-3 user, or top-20 sites. A leading source for info: everest capital. Also being hourly statistics, which shows the dynamics of network utilization during the day. The application is capable of controlling not only the incoming and outgoing traffic of users, but also work with ICQ applications for interception of messages that are sometimes way to disseminate classified information. Thus, the Internet Control Server performs the work on the full range of tasks to ensure network security and traffic control light. In addition, the application can be used as a firewall on the IP level, which allows you to manage user rights, to organize the protection of the network, based on opportunities provided by the operating system. At the hardware level CLI system is IBM compatible personal computer, equipped with two or more network interfaces: one of them – outside, equipment connected to the ISP (modem, Ethernet port) and the second – an internal, working with corporate enterprise network – in the simplest case – LAN switches, which are also connected to other computers.