【摘要】 为了对网络流量进行有效监控,保护网络服务器上重要的文件资源,论文首先对基于角色访问控制模型的时间约束特性和对象属性进行了研究,提出了一种带约束特性的网络信息恶意下载监控模型;设计了基于对象属性和时间更新的用户角色判定算法;设计并实现了基于时间特性和对象属性约束RBAC模型的网络信息下载监控系统;通过实验验证了该模型可对恶意下载行为进行有效地监视和控制,并且具有高效性、实时性和安全性.更多还原

【Abstract】 In order to monitor network traffic effectively,and to protect the important documentary resources in web servers,after deeply researched on the temporal constraint and object attribute of RBAC model,this paper put forward a network information download monitor model with attribute constraint.Designed a User-Role determine algorithm based on object attribute and time update.And then designed and implemented a network information download monitor system.Finally the experiments proved that this model can effectively monitor and control the malicious download activities,and has the high efficiency and security.更多还原