The Research Of Firewall Technology Based On IPv6/IPv4

With the high-speed development, computer network is used in many ways, such as politics, economy, and culture. Network is becoming an important part in our life. Therewith, network security is breaking open directly, and becoming a primary problem, which is faced to the applications of network in many corporations. And then, network security is unparalleled regarded broadly nowadays.As one of the most important technology of network security, firewall technology is becoming an important way in the research of network security. Firewall is a system, which is running between two networks. Firewall controls the level of accessing between two networks by the protocol, which is promised beforehand. This control can assure the security of system and data.? At present, the trunk network is Internet, which is based on IPv4 protocol. In the process of the Internet development, the localization of IPv4 is exposure gradually. These localizations were restricted the applications of IP technology and development of network. As the foundation of next generation protocol, IPv6 is ratified abroad by its brilliance superiority of technology. Many countries in the world are researching in IPv6 technology with a great deal of money in order to take lead possession of IPv6 technology. The applications, which are used of IPv6 technology in many countries, are becoming popular. In China, although the network based on IPv6 is built up, the network based on IPv4 will exist and be used in a long time. In this transition period, the research of the application based on IPv6/IPv4 transform technology has an important theory and practicality usage.Firstly the thesis indicates the background of the question for discussion, the new research in the world and the innovation of this thesis. The second chapter analyzes the protocol of IPv4 and IPv6, compares the commonness and difference according to the analyses, expatiates the space of IPv6 address. The third chapter discusses the standard of IPSec, compares the realization of security mechanism based on IPv6. The fourth chapter discusses the network security, compares the firewall technology. The fifth chapter designs a firewall based on IPv6/IPv4. The sixth chapter describes the details about the realization of firewall based on IPv6/IPv4 and tests the firewall based on IPv6/IPv4.