Removable Storage Control System And Implementation Based On File System Driver

With the rapid development of computer technology and network technology, as well as service system establishment of the various operational systems within large nterprises, public utilities and other units, number of public documents growed rapidly. Many of these documents were classified documents, and secret documents were often distributed to store in the computer of enterprise backbone or various technical staff or business. Because of each illegal operation or copy, the confidential information within the interal network was eay to leak, The safety access control of removable storage devices within the internal network became a very important part in the security and confidentiality of information.In view of the file system filter driver had close contact with other components, firstly this paper analyzed main system components associated with the file system, and focused on the Windows file system driver and file system filter driver, discussed the principle of file system filter driver, discussed how the file system filter driver was used in removable storage devices and descriped filter technology used.On this basis, the paper designed a removable storage control system file system filter driver based on file system filter driver, given the system structure and implements of the system. System's features included controlling file access of the removable storage, blocking access to hide files, preventing and killing the virus stored in volumes. In addition, this paper made detailed experiments from system's functionality, performance, security, stability, and several other key aspects of, fully verified the feasibility of this system.This paper's creative work was classification authority in every removable storage volume, by identifying each volume and it's uniquely identifie generated by removable storage devices, made real-time control to each volume according to its access; at the same time with the process monitoring, prevented and killed the virus and Trojan in storage volume.This system designed had the following characteristics:according to the policy, the specified volume was set to certain types of transparent access control; ensure the safe use in the process of reading the removable storage file, to avoid damage to the host by a malicious virus; this method was to enhance the host safety by implementing the use of removable storage filter driver and had effective application and important significance in the internal network.