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Abstract

The interconnection network environment , because the user identity on the network increasingly complex and ever-increasing security risks on the network to achieve the security of data exchange and transmission become an urgent problem . However , relying solely on software improvements obtained security is limited. In order to achieve a fundamental network data transmission security , we need the software methods and hardware method by combining network data control. The main contents of this paper is to study in an Ethernet environment data security exchange protocol and several dug security policy as well as in the framework of this security design and implementation of safety switches . Firstly, the data link layer of the computer network for research on the basis of principles proposed Ethernet-based security MAC protocol. It does this by framing specific security methods and secure channel access and flow control methods , using hardware methods to ensure reliable and secure data transmission network . This paper also safety switch hardware data encryption techniques were studied, two methods for high-speed switching environment effectively encrypt the data stream transmission . Meanwhile, in order to ensure efficient and reliable data forwarding , queuing theory we use characteristics of network data traffic modeling and analysis, and research results Ethernet receive buffer capacity size of the optimization results and the right time to perform flow control . In this paper we discuss the use of technology to generate secure linear shift register the CRC method . In the previous study of Ethernet switching technology based on safety , we switch on the safety function modules to achieve a secure exchange ethernet prototype system . The focus on the design and optimization of the switching system to achieve data link layer and the upper and lower physical layer switching module interfaces between modules , we switch the Ethernet data link layer security features section is divided into send module, receiver module , transmit buffer , receive buffer and RMII management module five main modules , using hardware description language for sending module, receiver module and RMII management module for a detailed design and implementation.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Computer network > General issues > Computer Network Security
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Study on Data Link Layer Technology in Security Switch

Abstract

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