基于Snort与IPtables技术的党政机关安全防御系统设计与实现-计算机技术专业论文.docxVIP

Abstract With the rapid development of informationization construction for the Party and government organizations, the level of information resource sharing is rising gradually. More and more internal confidential or sensitive information begins to be transported and stored between different regions and departments. Then information resources security meets seriously challenge. Currently, the core network security protection methods include intrusion detection technology, data encryption technology, firewall technology, identify authentication technology and so on. It is currently an important topic for the e-government construction of all level Party and government organizations how to efficiently use the advantages of all kinds of technology to construct a strict, efficient, stable security system. This thesis makes an in-depth study on the Snort intrusion detection technology of open source code through analyzing the fundamental technology and working principle of intrusion detection. The method for blocking information stealing behavior against the Party and government organization is proposed by deploying the appropriate security strategy, making response in time, and acting jointly with the firewall IPtables included in a Linux system. Firstly, the analysis to Snort intrusion detection system and workflow, detection principle, system construction for the IPtables firewall is carried on. Then, According to analyzing all kinds of current information stealing behavior against the Party and government office network, the characteristic of coding monitored by Snort can be described, and the detection rule for Snort can be improved to detect the transported data package with stealing characteristic in network without delay and give corresponding act according to different security level. Finally, the method for making the network security system more pertinent and efficient is put forward by studying on the joint action of Snort and IPtables firewall and formulatin