Train Control Security Segmentation for Defense-in-Depth
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing information security protection methods for train control and monitoring systems are inadequate, primarily relying on firewalls for simple isolation, failing to address the increasing threat of malicious network attacks, which can compromise train operations and safety.
Innovation Solution
A multi-dimensional information security protection system integrating region boundary, communication network, and terminal device security, employing firewalls, safety monitoring, and response modules to prevent attacks, with distributed and centralized security analysis to ensure secure communication and device integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If only firewall is used for simple isolation protection, then device complexity is reduced, but security reliability is insufficient to defend against malicious network attacks
Solution Approach 1:
The patent segments the train control network into multiple security zones (control zone, information zone, maintenance zone) with different security levels. Each zone is protected by dedicated security devices including firewalls, intrusion detection systems, and safety monitoring modules. This segmentation allows comprehensive security protection without requiring a single complex system, thereby improving security reliability while managing device complexity through modular deployment.
2Reliability
If multi-dimensional security protection system is implemented, then security reliability is improved, but device complexity increases
Solution Approach 1:
The patent implements multi-dimensional security protection by adding security layers at different network dimensions: region boundary security (zone isolation), communication network security (protocol validation, intrusion detection), and terminal device security (device authentication, access control). This multi-dimensional approach comprehensively addresses security threats while organizing complexity across different operational dimensions rather than concentrating it in a single system.
Solution Approach 2:
The security system employs a nested architecture where security devices are deployed at multiple hierarchical levels: zone boundary firewalls, network-level intrusion detection systems, and device-level security modules. Each layer nests within and supports the others, creating a defense-in-depth structure that provides comprehensive protection while distributing system complexity across hierarchical levels.
3Reliability
If region boundary security protection is implemented by deploying safety protection device at regional boundary, then security reliability is improved, but device complexity and cost increase
Solution Approach 1:
The patent applies local quality by tailoring security measures to specific regional boundaries based on their security requirements. The control zone boundary uses stringent protection with safety monitoring modules and protocol validation, while the information zone boundary employs standard firewall and intrusion detection. This localized approach optimizes security reliability at each boundary while avoiding uniform over-protection that would increase overall device complexity and cost.
Data Source
AI summary
The invention relates to an information security protection method and apparatus, and a computer-readable storage medium. The information security protection method comprises the steps of: allocating a train control and monitoring system to an intranet region, and performing region boundary security protection on the train control and monitoring system; performing communication network security protection on the train control and monitoring system; and performing terminal device security protection on the train control and monitoring system. The invention deeply integrates an application service of a train control and monitoring system, and defence-in-depth is performed on the train control and monitoring system from a plurality of dimensions such as region boundary security, communication network security and terminal device security, such that attacks initiated from an intranet and an extranet of the system can be effectively handled, and thus, the information security protection capability of the train control and monitoring system is improved.