With the rapid development of China's social economy,the economy of various regions has rapidly improved.At the same time,people are paying more attention to the issue of farmers' social security.In order to r...With the rapid development of China's social economy,the economy of various regions has rapidly improved.At the same time,people are paying more attention to the issue of farmers' social security.In order to realize the rapid development of regional economy and form a relatively stable social order,there is a need to improve the social security system of farmers so as to ensure that more people acquire basic social security rights.On this basis,based on the background of urbanization,this article studies the social security status of landless farmers in R city,and analyzes the old-age security as well as the medical insurance of landless farmers in R city.展开更多
多变体执行是一种网络安全防御技术,其利用软件多样性生成等价异构的执行体,将程序输入分发至多个执行体并行执行,通过监控和比较执行体的状态来达到攻击检测的目的。相较于传统的补丁式被动防御技术,多变体执行不依赖于具体的攻击威胁...多变体执行是一种网络安全防御技术,其利用软件多样性生成等价异构的执行体,将程序输入分发至多个执行体并行执行,通过监控和比较执行体的状态来达到攻击检测的目的。相较于传统的补丁式被动防御技术,多变体执行不依赖于具体的攻击威胁特征进行分析,而是通过构建系统的内生安全能力来对大多数已知、甚至未知的漏洞做出有效防御。近年来,多变体执行技术在不断改进和完善,但是误报问题是制约其发展的主要因素。本文针对多变体执行产生误报的原因进行了详细分析,并在此基础上提出利用容器技术实现多变体执行系统在解决误报问题上的优势。为提升多变体执行技术的可用性,本文设计并实现了一种基于容器技术的多变体执行系统CON-MVX,有效解决传统多变体执行系统的误报问题。CON-MVX利用多个经过运行时随机化技术构建的异构容器作为执行体,使用可重构的模块化组件和独立的容器管理工具对容器执行体进行编排管理,建立进程间监控器CGMon,在内核层级实现对多个执行体的输入同步和输出裁决。同时,为满足与客户端良好交互性,建立中继端口策略,保证系统运行状态的正常反馈。实验结果表明, CON-MVX在保证安全能力的前提下,能有效降低多变体执行系统的误报率,在双冗余度执行条件下使用SPEC CPU 2006测试集测试时,系统带来的平均额外性能损耗不超过15%。展开更多
文摘With the rapid development of China's social economy,the economy of various regions has rapidly improved.At the same time,people are paying more attention to the issue of farmers' social security.In order to realize the rapid development of regional economy and form a relatively stable social order,there is a need to improve the social security system of farmers so as to ensure that more people acquire basic social security rights.On this basis,based on the background of urbanization,this article studies the social security status of landless farmers in R city,and analyzes the old-age security as well as the medical insurance of landless farmers in R city.
文摘多变体执行是一种网络安全防御技术,其利用软件多样性生成等价异构的执行体,将程序输入分发至多个执行体并行执行,通过监控和比较执行体的状态来达到攻击检测的目的。相较于传统的补丁式被动防御技术,多变体执行不依赖于具体的攻击威胁特征进行分析,而是通过构建系统的内生安全能力来对大多数已知、甚至未知的漏洞做出有效防御。近年来,多变体执行技术在不断改进和完善,但是误报问题是制约其发展的主要因素。本文针对多变体执行产生误报的原因进行了详细分析,并在此基础上提出利用容器技术实现多变体执行系统在解决误报问题上的优势。为提升多变体执行技术的可用性,本文设计并实现了一种基于容器技术的多变体执行系统CON-MVX,有效解决传统多变体执行系统的误报问题。CON-MVX利用多个经过运行时随机化技术构建的异构容器作为执行体,使用可重构的模块化组件和独立的容器管理工具对容器执行体进行编排管理,建立进程间监控器CGMon,在内核层级实现对多个执行体的输入同步和输出裁决。同时,为满足与客户端良好交互性,建立中继端口策略,保证系统运行状态的正常反馈。实验结果表明, CON-MVX在保证安全能力的前提下,能有效降低多变体执行系统的误报率,在双冗余度执行条件下使用SPEC CPU 2006测试集测试时,系统带来的平均额外性能损耗不超过15%。
