一种新型的网络隐蔽信道检测模型  

A new detection model of network covert channel

作　　者：王涛[1] 袁健[1] 

机构地区：[1]上海理工大学光电信息与计算机工程学院,上海200093

出　　处：《信息技术》2014年第5期106-109,113,共5页Information Technology

摘　　要：由于隐蔽信道可以绕过传统的安全策略实现非正常的通信机制,所以隐蔽信道的存在给安全信息系统带来了极大的安全隐患。网络中存在的隐蔽信道种类繁多,如何高效、快速、准确地检测出信道中可能存在的多种隐蔽信道成为亟需解决的问题。针对此问题提出了一种新型的网络隐蔽信道检测模型,该检测模型可根据安全等级的要求,对网络信道做出不同程度的安全检测,同时,根据隐蔽信道出现的频率、危害程度等属性实时改变隐蔽信道的检测顺序,从而提高网络隐蔽信道的检测效率。The existence of covert channel has taken a huge safety loophole to information system, because covert channel can achieve illegal communication bypass the traditional security policy. There are so many kinds of covert channel exist in network,due to this situation,how to detect the covert channel which hidden in normal information flow with an efficient accuracy way become a difficult problem to be solved. A new detection model of network covert channel is proposed in this paper in consideration of this problem. This new detection model can proceed varying degrees of security detection depending on the system security degree. What＇s more,the new model will change the detection order in real- time based on frequency,level of threat and so on,as a result,these will increase detection efficiency a great deal.

关 键 词：隐蔽信道 检测模型 PAGERANK 网络隐蔽信道 检测算法排序 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]