| Summary: | 碩士 === 樹德科技大學 === 資訊管理研究所 === 93 === Due to the hacker’s intrusion technologies are fast development and to change with each passing day, Network security become the most important issue of information systems. With regard to hacker, it is easy to intrude the information systems with vulnerabilities, moreover the client user lack the protected technology and knowledge to evaluate the risk degree of information system. Hence it is difficult to prevent malicious attack from hacker, even if there are install some security protection mechanism such as anti-virus, firewall and intrusion detection system. In order to make the client user has the measure principle with the hacker’s tools, this thesis use the denial of service attack as the experiment to search and create performance index of network attack and defense tools. The research hopes these performance indices can completely imitate to all of hacker’s tools, and to understand the trend of network attack. At the same time the result of this research let the client user to understand the extent of attacking injury and how to protect the network system, decrease the damage of hacker attack.
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