Research And Implementation Of Data Filtering System Based On One - Way Isolation Gatekeeper

In recent years, it will be in a common state with the shared information between local area network, the world wide web and other network information transmission. Many information system with particularly high security requirements or classified, also hope that through the network transmission efficiency, ending the copy Times in the past. However, most of the enterprises and institutions of the network made up of the not secret-related network and classified two kinds of network, appears unavoidably information transmission between two networks, information confidentiality issues also attract the attention of relevant departments. Therefore, network technology for production and life bring convenience, at the same time also to the enterprise how to avoid the safety loss is proposed and a great problem. Due to the country to constantly improve the classified network security requirements, make the safety of the classified computer connected to the Internet become an important issue to be solved. Classified network with the classified network between full physical isolation, has become a national and even the livelihood of the people are eager to solve the problem.This topic with the author’s practice unit of a boundary traffic isolation gateway project on the basis of study, to resolve the current offline copy transmission efficiency is low, low transmission network security, efficiency and cost is high. From one-way isolation scheme in the hardware processing, is proposed based on ARM architecture Cortex A8 kernel AM3354 processor as the core to develop the one-way data filtering system under Linux operating system, secondly this article mainly from the software design of two direction of unidirectional cars brake, to design the system in detail. One-way cars brake data filtering system software design USES Linux socket network programming and multi-process technology development, the system based on TCP/IP protocol network share data information transmission on the CIFS protocol. Finally, based on data filtering system software design, describes the specific application. After on-site installation and debugging, the preliminary implementation projects expected results.