Abstract:

Information security level protection is an important guarantee of information system. It requires that different level information system should have the different security proctection which is realized by using suitable security control on security technology and system management. The paper focuses on an important aspect of the three information system security assessment of the level of protection assessment model, the three-tier grading system information network security level to protect the safety control module for risk assessment analysis to accurately focus on different security information systems security evaluation accurately reflects the overall network architecture and all critical information systems security of the network devices. Based on the assessment model, the most common major information systems - three information systems, "Network security risk assessment based on the information system security protection standards."Derived by analyzing three information systems risk assignment, and then get a more precise impact of different risk levels for each system can more effectively control security risks and prevention, provide strong support for the safety and security of information systems decisions protection.

Key words: classified protection, network security, risk assessment, evaluation model, information security