The approachof anomaly detection is a vigorously adaptive technique because it can detect unknown intrusions. The paper summarizes the advantage and the shortcoming of known anomaly-detection approaches in the past,wh...The approachof anomaly detection is a vigorously adaptive technique because it can detect unknown intrusions. The paper summarizes the advantage and the shortcoming of known anomaly-detection approaches in the past,which is based on the model of intrusion detection proposed by Dorothy Denning. Moreover ,the development current of anomaly-detection is proposed on the above.展开更多
介绍一种利用YACC(Yet Another Compiler-Compiler)技术实现检测网络服务器程序异常行为的新方法。该方法用一种携带语义标注的上下文无关文法描述服务器程序正常行为模式,利用YACC自动生成的语法分析器构成异常检测引擎,并利用YACC提...介绍一种利用YACC(Yet Another Compiler-Compiler)技术实现检测网络服务器程序异常行为的新方法。该方法用一种携带语义标注的上下文无关文法描述服务器程序正常行为模式,利用YACC自动生成的语法分析器构成异常检测引擎,并利用YACC提供的错误处理和语义处理接口对异常现场进行分析。实验结果表明,该方法不仅能有效检测各种利用服务器程序漏洞进行的缓冲区溢出、堆内存破环等入侵方式,而且能实时地对异常行为进行分析追踪并向安全管理人员提供入侵相关详细信息,而这种能力正是目前同类方法所缺乏的。展开更多
文摘The approachof anomaly detection is a vigorously adaptive technique because it can detect unknown intrusions. The paper summarizes the advantage and the shortcoming of known anomaly-detection approaches in the past,which is based on the model of intrusion detection proposed by Dorothy Denning. Moreover ,the development current of anomaly-detection is proposed on the above.
文摘介绍一种利用YACC(Yet Another Compiler-Compiler)技术实现检测网络服务器程序异常行为的新方法。该方法用一种携带语义标注的上下文无关文法描述服务器程序正常行为模式,利用YACC自动生成的语法分析器构成异常检测引擎,并利用YACC提供的错误处理和语义处理接口对异常现场进行分析。实验结果表明,该方法不仅能有效检测各种利用服务器程序漏洞进行的缓冲区溢出、堆内存破环等入侵方式,而且能实时地对异常行为进行分析追踪并向安全管理人员提供入侵相关详细信息,而这种能力正是目前同类方法所缺乏的。
