Research On Network Security Risk Analysis Of Airport Fuel Supply Automatic Control System

The form of the network security problem in the civil aviation industry is severe.With the implementation of the Cyber Security Law and Graded Protection 2.0,the network security problem of the airport fuel supply automatic control system is becoming more and more important.Through the network security risk analysis of the airport fuel supply automatic control system,the aviation fuel system can establish a more complete safety system and ensure the safe and normal operation of the system.This article describes the introduction of industrial control system and the process of industrial control system security risk analysis,and studies the network security risk analysis method of airport fuel supply automatic control system.The main research content of the thesis is as follows.(1)According to the analysis and research status of domestic and foreign industrial control systems and risk assessment standards,and elaborated the industrial control system architecture and safety requirements.It analyzes the process of network security risk analysis of industrial control system in detail,and explains asset identification,vulnerability identification,threat identification and safeguard capability identification.Finally,it conducts in-depth research on current representative risk analysis methods.(2)The network security analysis method of the time automata model is proposed.First,starting from the characteristics of the airport fuel supply automatic control system,the time automata model is established.Secondly,based on the principles of Modbus protocol and OPC protocol,a man-in-the-middle attacker model is established.Then,use UPPAAL to verify the security attribute statement.Finally,formally analyze the network security of the airport fuel supply automatic control system through the verification results.(3)A network security analysis method based on the attack defense tree model is proposed.According to the relevant industry standards and risk assessment process of industrial control system risk assessment,an attack defense tree model is established.Aiming at the uncertainty of the evaluation results caused by the difference of evaluation expert experience,fuzzy number theory and probabilistic risk analysis technology are introduced to calculate the probability interval of safety events.Finally,defuzzification obtains the probability of the attack path of the airport fuel supply automatic control system.This article analyzes the network security risks of the airport fuel supply automatic control system from both qualitative and quantitative aspects,which has certain practical significance for realizing the sustainable development of civil aviation safety.