FTP服务漂移技术的研究及实现  

Research and Realization on FTP Service Migration Technology

作　　者：刘红军[1] 黄遵国[1] 

机构地区：[1]国防科学技术大学计算机学院,长沙410073

出　　处：《计算机工程》2008年第19期94-97,共4页Computer Engineering

基　　金：国家"863"计划基金资助项目"基于全息机制的网络可生存性系统模型及关键技术研究"(2006AA01Z401)

摘　　要：基于服务漂移必须包含的3类状态——初始状态、活动状态和完成状态,提出服务漂移的体系结构,分析服务漂移的实现过程。面临威胁事件时,服务漂移技术能主动或被动地漂移到备份节点,以适应威胁,决定是否漂移。服务漂移对用户是透明的,用户感觉不到服务器的变化。服务飘移只对服务状态进行漂移,可以减少传输数据量、缩短漂移时间。以FTP服务为例实现了服务漂移的原型。Service migration should include three types of state initial state, active state and complete state. Based on these, this paper proposes the architecture of service migration and analyzes the realization of service migration. When facing security threat, service migration determines whether to migrate, either actively or passively. It is transparent to the users so that they will not feel the change of service. It just migrates the service states with the purpose of shorting migration time by reducing transmitted data. The migration of FTP service is realized.

关 键 词：可生存性 服务漂移 服务状态 FTP服务 

分 类 号：N945[自然科学总论—系统科学]