Analysis And Research On Dynamic Security For Active Network

Along with the increasingly extend of the Network scale, the limitation of the traditional network has become more and more obviously. As a new network system structure, in which the nodes are programmable, the Active Network provides a valid solution to the problems, long period for standardization and bad compatibility, faced by the current traditional network.Since the Security problems have restricted the development of the Active Network seriously, This paper puts forward Dynamic Secure Active Network (DSAN), which is applicable to the programmable dynamic network environment, combines the dynamic characteristic of Active Network, and bases on the improvement of existing network security techniques. What this paper has done is as follows:Firstly, this paper educe the research purpose and meaning of the topic after analyzing the development trend and existing problems of the Active Network. Then, this paper briefly analyzed the system structure of the Active Network and the basic framework of the key network factors. Based on both of them, a deeply research on the safe performances and correlations of each key entity has been done, and finally put forward the secure project of the DSAN system. This paper mainly focus on the authentication and the authorization, Combining two kinds of mechanisms of HOP-HOP and END-END to guarantee the security of transporting information, the petri nets is used to describe the function model. Finally, after applying the above-mentioned core technique to the transporting process of AN, the DSAN system model has been put forward, in which there are three aspects: the whole network environment, the secure model of Active Nodes and the secure structure of Active Packets, the petri nets has also been used to describe the function mechanism of these models. At the same time, this paper has made a security control on the process carried on the communication between AN and the function servers involved in these models.