A new detection model of network covert channel
Wang Ta · Information technology newsletter · 2014
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.