Research of deep packet inspection technology in industry control systems based on d-Left counting bloom filter

Kehe Wu, Yi Li, Long Chen, Fei Chen 

Department of Control and Computer Engineering, North China Electric Power University, 102206 Beijing, China

Aims at the problem of industry control system logic being tampered by malicious programs, this paper proposed a deep packet inspection model for industry control systems. It adopts d-Left Counting Bloom Filter to implement string matching of characteristic database, which has a higher matching efficiency and lower misjudgement rate compared to other algorithms. This model can monitor malicious behaviours in industry control systems effectively and can basically meet the demand of security and reliability in current industry control systems.