A Firewall System with Information Analyzing
具有信息分析功能的防火墙系统研究

This paper presents a firewall system with information analyzing. It supports both Ethernet bridge and PPP bridge,and needn't any IP address when works,so it' s pretty secure and transparant for users. The main functions of the system include packet filter,IP packet retrieving and application message recovering,on-line and off-line keyword based information analyzing. In this paper,somc key issues are also discussed.