(Changchun University of Science and Technology,Changchun 130000)

Abstract: Network is one of the 20th century after the invention of the contribution of the greatest human society, most far-reaching. The impact of social networks on the transmission of information beyond the means of any past era, this article from the perspective of network attack and defense, protocol and security solutions to elaborate network protocol security. Focus on vulnerabilities and prevention strategies in the physical network layer of wireless networks, and the real experiment.
Keywords: network; communications protocol ;security vulnerability; prevention strategies

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