| Network security issues become the focus of attention, after America’s "Prism plan" being exposed. People is also increasingly dependent on the Internet with the development of the Internet and smart terminal. Therefore, strengthening the security of their online time lead to people’s attention. Authentication is the first network security gate. So other network security technologies should be in a secure certification basis. If not, then the attacker fabricated identity theft or legitimate user, then the additional security measures will become useless it.Internet users authenticate DHCP environment has been widely used in companies, schools and other local area network environment. It is also because it is a very broad application of the system to steal authentication attacks against the user’s authentication information behavior has many security risks to the user, resulting in a loss. Despite the safety for the user to take a number of ways, but still there will be some deficiencies. The paper attempts to solve these existing problems.The author in his own internship company which work in user authentication and theoretical aspects of knowledge, for less than the current system under the user LAN DHCP authentication based on the existence of the Internet, put forward their own improved method is proposed based on the new quad-certified methods. Makes users more security in the authentication process, while certification is more convenient and saves network construction costs. In this paper, the work done in the following areas.1. Analyzes the background and significance of user authentication under LAN DHCP environment, research the research status at home and abroad in the LAN user authentication aspects. Describes the current LAN standards and methods of user authentication protocols, and comparison of the advantages and disadvantages of various methods. They point out the existence of security vulnerabilities. 2. Proposed certification based Four Elements Method under LAN DHCP environment.Focuses on the principles of certification based Four Elements Method, system design approach, the objectives to be achieved. The overall framework system, each process module.3. Finally, the main function of the four-tuple-based authentication tested to verify.The Four Elements Method based authentication scheme to achieve a secure Internet user authentication, because the authentication process will produce a non-fixed factor and certification are different each time, so as to withstand the replay attack, fake attacks, some network attacks and thus more secure in terms of security, but do not need to send the password authentication process, which would also guard the privacy of users, while also saving the cost of network users. |
