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Design and Implementation of the edge router based Secure Multicast

Author: FuRunZuo
Tutor: WuYue
School: University of Electronic Science and Technology
Course: Computer Software and Theory
Keywords: Network Architecture Multicast Security Edge router Agreement
CLC: TP393.05
Type: Master's thesis
Year: 2011
Downloads: 8
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Abstract


The rapid development of Internet technology, changing human social communication, network information increasingly prominent role in the development of society. Bring convenience for people in the computer network at the same time, however, the network security situation is increasingly grim, government websites, well-known portal attacks are common. Did not consider safety factors in the design at the beginning of the Internet, which is the root cause of the safety issues that lead to an endless stream of today's Internet. A number of years, the vulnerability of the Internet has been using loopholes patch protection measures, in the long run, this is not enough, the network architecture in order to eliminate a threat to the fundamental security. In 2005, 30 U.S. Internet experts proposed reconstruction of the plan of the next-generation Internet - Network Innovation the globalization environment (GENI), one of the GENI core idea is to build a security based architecture. The multicast source point of a send operation to send the same copy of the datagram to multiple end transmission. For the one-to-many communication, a multicast has a higher transmission efficiency than the unicast and broadcast. IP Multicast has experienced 20 years of development, although certain applications in the field of multimedia, but never get the large-scale deployment of IP multicast advantage did not bring the expected success. Key factors hinder the Multicast business development, one of which is the openness of IP multicast multicast security issues, this openness that enabled multicast communication more than unicast vulnerable to various attacks. IP Multicast security, yet there are standard protocols. The second is the increase in IP multicast router processing overhead and memory consumption. Multicast and unicast using different routing mechanism, which inevitably increases the complexity of the router structure. This article is based on the National 863 Project \safety features, and supports unicast and multicast the unified routing mechanism simultaneously. On the subject of this article, the edge router design and implementation. Accurate positioning of the edge routers of their status in the model, with the four agreements - GMAP, MPLS, IP, GRP, respectively, to achieve four functions - multicast access control, 2.5-layer transmission, transformation group address, group information reporting, the edge router deployed IPSec security router. The GMAP and GRP custom protocols specific to the project network architecture; MPLS protocol has been standardized and implemented in accordance with the appropriate standards; the IP after appropriate functional expansion, can complete the group address translation; then the overall design of the protocol stack, clear Added protocol in the protocol stack level position; Then, each agreement Expand the detailed design and implementation of each protocol is implemented as a kernel module, and finally through the model's overall test to verify the functionality and performance of the edge router.

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