因为传统的网络架构方式导致安全服务与硬件资源高度耦合,网络服务的变化往往会引起硬件重新部署,所以多域网络下的安全服务在部署时存在一定的难度。基于软件定义网络(Software Defined Network,SDN)/网络功能虚拟化(Network Function ...因为传统的网络架构方式导致安全服务与硬件资源高度耦合,网络服务的变化往往会引起硬件重新部署,所以多域网络下的安全服务在部署时存在一定的难度。基于软件定义网络(Software Defined Network,SDN)/网络功能虚拟化(Network Function Virtualization,NFV)的多域数据中心和多域网络能够解耦安全服务和硬件设备,从而完成自动化部署。安全服务编排系统是实现安全服务自动化部署的关键,由服务数据层、服务管理层、服务编排层构成,其设计要点为分类器、服务控制器以及网络控制器等。展开更多
Migrating legacy system with web service is an effective and economic way of reusing legacy software in a SOA environment.In this paper,we present an approach for migrating a three-tie object-oriented legacy system to...Migrating legacy system with web service is an effective and economic way of reusing legacy software in a SOA environment.In this paper,we present an approach for migrating a three-tie object-oriented legacy system to SOA environment.The key issue of the approach is about services identification from large numbers of classes.And we propose a bottom-up method to model the system with UML and identify services from UML then.This approach can be a reference to an auto-migrating process.展开更多
文摘因为传统的网络架构方式导致安全服务与硬件资源高度耦合,网络服务的变化往往会引起硬件重新部署,所以多域网络下的安全服务在部署时存在一定的难度。基于软件定义网络(Software Defined Network,SDN)/网络功能虚拟化(Network Function Virtualization,NFV)的多域数据中心和多域网络能够解耦安全服务和硬件设备,从而完成自动化部署。安全服务编排系统是实现安全服务自动化部署的关键,由服务数据层、服务管理层、服务编排层构成,其设计要点为分类器、服务控制器以及网络控制器等。
基金Supported by the National Grand Fundamental Research 973 Program of China under Grant No.2009CB320704the National High-Tech Research and Development Plan of China under Grant Nos.2007AA010301,2007AA01Z134
文摘Migrating legacy system with web service is an effective and economic way of reusing legacy software in a SOA environment.In this paper,we present an approach for migrating a three-tie object-oriented legacy system to SOA environment.The key issue of the approach is about services identification from large numbers of classes.And we propose a bottom-up method to model the system with UML and identify services from UML then.This approach can be a reference to an auto-migrating process.