以Ph ilipsARM7LPC2104微控制器为核心器件,通过RS232接口与S im ens的MC35 iGPRS模块连接,在此平台上嵌入ucosII操作系统以及基于ucosII的uc/ip(小型的ppp/ip/tcp协议栈)协议,实现单片机的无线上网功能,可广泛应用于远程控制,信息交互...以Ph ilipsARM7LPC2104微控制器为核心器件,通过RS232接口与S im ens的MC35 iGPRS模块连接,在此平台上嵌入ucosII操作系统以及基于ucosII的uc/ip(小型的ppp/ip/tcp协议栈)协议,实现单片机的无线上网功能,可广泛应用于远程控制,信息交互领域。本文剖析了uc/ip协议的特点和移植,并介绍了硬件接口和ucosII、AT指令集和串口驱动等的软件实现。展开更多
Quantitative security metrics are desirable for measuring the performance of information security controls. Security metrics help to make functional and business decisions for improving the performance and cost of the...Quantitative security metrics are desirable for measuring the performance of information security controls. Security metrics help to make functional and business decisions for improving the performance and cost of the security controls. However, defining enterprise-level security metrics has already been listed as one of the hard problems in the Info Sec Research Council's hard problems list. Almost all the efforts in defining absolute security metrics for the enterprise security have not been proved fruitful. At the same time, with the maturity of the security industry, there has been a continuous emphasis from the regulatory bodies on establishing measurable security metrics. This paper addresses this need and proposes a relative security metric model that derives three quantitative security metrics named Attack Resiliency Measure(ARM), Performance Improvement Factor(PIF), and Cost/Benefit Measure(CBM) for measuring the performance of the security controls. For the effectiveness evaluation of the proposed security metrics, we took the secure virtual machine(VM) migration protocol as the target of assessment. The virtual-ization technologies are rapidly changing the landscape of the computing world. Devising security metrics for virtualized environment is even more challenging. As secure virtual machine migration is an evolving area and no standard protocol is available specifically for secure VM migration. This paper took the secure virtual machine migration protocol as the target of assessment and applied the proposed relative security metric model for measuring the Attack Resiliency Measure, Performance Improvement Factor, and Cost/Benefit Measure of the secure VM migration protocol.展开更多
文摘以Ph ilipsARM7LPC2104微控制器为核心器件,通过RS232接口与S im ens的MC35 iGPRS模块连接,在此平台上嵌入ucosII操作系统以及基于ucosII的uc/ip(小型的ppp/ip/tcp协议栈)协议,实现单片机的无线上网功能,可广泛应用于远程控制,信息交互领域。本文剖析了uc/ip协议的特点和移植,并介绍了硬件接口和ucosII、AT指令集和串口驱动等的软件实现。
文摘Quantitative security metrics are desirable for measuring the performance of information security controls. Security metrics help to make functional and business decisions for improving the performance and cost of the security controls. However, defining enterprise-level security metrics has already been listed as one of the hard problems in the Info Sec Research Council's hard problems list. Almost all the efforts in defining absolute security metrics for the enterprise security have not been proved fruitful. At the same time, with the maturity of the security industry, there has been a continuous emphasis from the regulatory bodies on establishing measurable security metrics. This paper addresses this need and proposes a relative security metric model that derives three quantitative security metrics named Attack Resiliency Measure(ARM), Performance Improvement Factor(PIF), and Cost/Benefit Measure(CBM) for measuring the performance of the security controls. For the effectiveness evaluation of the proposed security metrics, we took the secure virtual machine(VM) migration protocol as the target of assessment. The virtual-ization technologies are rapidly changing the landscape of the computing world. Devising security metrics for virtualized environment is even more challenging. As secure virtual machine migration is an evolving area and no standard protocol is available specifically for secure VM migration. This paper took the secure virtual machine migration protocol as the target of assessment and applied the proposed relative security metric model for measuring the Attack Resiliency Measure, Performance Improvement Factor, and Cost/Benefit Measure of the secure VM migration protocol.
