Research On Survivability Of The Information Service System In Military Training Information Network Data Center

The Survivability as a hotspot in the research on security technology nowadays means to guarantee the continuity and usability of key service when the network information system is attacked, intruded and destroyed. The military training network data center information service system provides data-sharing service to variety of military applications, so it's particularly significant that enhancing its survivability to guarantee the function of military application system based on military training network on the safe side.From the angle of guaranteeing the continuity and usability of the data-sharing service ,the dissertation discussed on the problem of how to improve the survivability of the military training network data center information service system, through introducing the technology of Service Migration. Firstly, the theory and technology of Service Migration is researched and the researching thought of the enhancing technology of Survivability based on Service Migration is cleared; It is analyzed of the implementing mechanism and the security of Service Migration, then aiming at the limitation of the security mechanism of the technology of Service Migration intrinsically, an improved scheme is proposed through introducing the authenticating mechanism based on the trustworthy third party's authoritative authentication, and its validity on avoiding the man in the middle attack is analyzed; Based on detailed analysis of the active Service Migration model proposed by Huang Zun-guo, a novel Service Migration model based on secure group communication, namely SGCSMM is proposed aiming at the problems such as that the attacker issue vicious migration request during the process, and the security of the Service Migration can be guaranteed through security analysis.Secondly, based on the improvement of the security of Service Migration and the construction of SGCSMM model , and through the requirement analysis of military training network data center information service system and the combination three kinds of survivability enhancing mechanism, such as anti-attack, recognition and answering and resuming mechanism, a survivable service frame based on Service Migration is designed to guarantee the continuity and usability of data-sharing service when it is attacked and destroyed so that the survivable ability of the system can be improved.Lastly, the hardcore of the frame, namely Service Migration module is researched: A novel springing mechanism based on "timeslice and incident" is proposed, and the migration strategy of the service is optimized on this basis; then a novel service resuming scheme is designed through the combination of the passive replication and information log , and the feasibility and validity of the scheme is testified.