This article is devoted to research methods for applying of scheme of packet filtering rules. The scheme of the Firewall is developed on corporate network to allow protect the network system from information security threat. Use of Firewall in different mode of protection in the corporate networks is given which is accessed to segment information resources under the administrator's rules. Filtering packets rule is worked out according to the state of the virtual connection that the process moving of packets is determined by flags and sequence numbers of head IP addresses. The system logging log is designed to record a message about events that involve firewall operating system management activities and events that are fraught with an intersection-related event log. Consequently, the offered rules of packet filtering protected the network traffic from unwanted action. Furthermore, the rules of packet filtering is formed, allowing to observe and management access to resource users on the Web content.