Real-Time Intrusion Alert Correlation System Based on Prerequisites and Consequence

On the basis of research and analysis of the current intrusion alerts correlation technologies, the real-time intrusion alert correlation model based on prerequisite and consequence (RIAC) is proposed, which can adapt the large scale, distributed environment and provide on-line correlation function. RIAC system employs distributed agents to collect alert information on-line and adopts prerequisite-consequence correlation method to analysis and discovery attack scenario and intrusion intent behind alerts. A prototype is implemented and validation testing and real-time testing is carried on by using the real IPv6 dataset. The results show that RIAC can correlate alerts and discovery attack scenario efficiently and timely.