Research And Implementation On Key Technologies Of Embedded Linux Based Railway Dedicated Security Gateway

With the development of computer network technology, computer network has involved in our life and work. Network security has gradually become an important issue which influences people's life and work. At present, Chinese computer network applications in many areas lack an effective and low-cost method to protect the network security, for example, the networks of railway stations of the railway signal system. They belong to railway producing network and need high reliability requirement. At present, most of the existing network security products cannot meet the requirements of railway station networks.Therefore, my research project focuses on the network security protection of railway station networks on the railway signal system. My project focuses on the information communication mechanisms of the railway signal system in order to bring out a network security isolation solution which can meet the security requirements. My research also focuses on implementing the network security isolation device.The dissertation discusses mainly on the implementation and optimization of hardware and software of network security equipments for railway station network in signal system. First, I did comprehensive analysis of several current mainstream network security technologies. Second, I presented a set of solution of network security equipment with embedded system for railway station network in the signal system. Third, I introduced the design of hardware platform of our security equipment and built an embedded Linux operating system for the hardware platform on the basis of the hardware and software.