Networked Industrial Control Device Asset Identification Method Based on Improved Decision Tree

Industrial control device asset identification is essential to the active defense and situational awareness system for industrial control network security. However, industrial control device asset information is challenging to obtain, and efficient asset detection models and identification methods are urgently needed. Existing active detection techniques send many packets to the system, affecting device operation, while passive identification can only analyze publicly available industrial control data. Based on this problem, we propose an asset identification method including networked industrial control device asset detection, fingerprint feature extraction and classification. The proposed method use TCP SYN semi-networked probing in the asset detection phase to reduce the number of packets sent and remove honeypot device data. The fingerprint feature extraction phase considers the periodicity and long-term stability characteristics of industrial control device and proposes a set of asset fingerprint feature combinations. The classification phase uses an improved decision tree algorithm based on feature weight correction and uses AdaBoost ensemble learning algorithm to strengthen the classification model. The experimental results show that the detection technique proposed by our method has the advantages of high efficiency, low frequency and noise immunity.