Study on Firewalls and Network Intrusion Detection Linkage Systems

This paper proposes a new framework model of firewalls and network intrusion detection linkage systems after its weakness in network security systems is taken into consideration, which efficiently overcomes the difficulty of the traditional NIDS in the active access control and complexity of firewalls rule distribution. At last, this paper gives a detailed solution about the linkage systems——an efficient package filter firewall based on connecting analysis and an NIDS based on state transferring analysis. It not only raises detection speed and detecting veracity but also decreases false alert rate.