Feedback Adjustment Algorithm for Distributed IDS Dynamic Credibility
Xin Cheng · Journal of Henan University of Science & Technology · 2010
To treat different IDS systems respectively based on their performances and to instantly adjust the veracity of aggregated security information in the distributed IDS and security facility coupling system,an algorithm for IDS dynamic credibility aggregation and adjustment was brought forward.The algorithm computes integrated credibility from all the raw alerts by using the D-S evidence theory firstly and then adjusts the old credibility of all the IDSs' alerts by using the integrated credibility interactively.So the credibility of IDS will instantaneously reflect the veracity of its history of alerts.The credibility of nodes will be its accurately quantized valuation after training for a period of time,then the IDSs' alerts should be accurate enough to eliminate improper coupling actions for false alerts to some extent.