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Stepping-stone is the most popular way used to attack other computers. Some insiders use stepping-stone to launch their attacks pretending to be outsiders. In this paper, we propose a novel algorithm to detect stepping-stone insider attacks through comparing outgoing and incoming connections. We modify the existing packet matching algorithm by introducing sliding window to make the algorithm more...
The traffic generated by the hypertext transfer protocol has a dominating position in current Internet traffic. The analyzing and characterizing of HTTP traffic is significant for understanding the nature of Internet traffic. Many studies on HTTP traffic were carried out when HTTP 1.1 appeared. Along with the prevailing of Web 2.0 the research on new features of HTTP traffic becomes a new issue in...
Traffic metrics at application level are critical for protocol research, abnormity detection, accounting and network operation. There are great challenges to identify packets at application level since dynamic protocol ports and packet encryption are deployed popularly. There are several different methods of traffic identification being proposed in recently research for corresponding applications...
Complexity and diversity of Internet traffic are constantly growing. Networking researchers become aware of the need to constantly monitor and reevaluate their assumptions in order to ensure that the conceptual models correctly represent reality. Using the dataset collected by NetTurbo from three different bidirectional OC-48 links in metro area networks at the two biggest ISPs of China, this paper...
Flow metrics are critical for protocol research, anomaly detection, network operation and application deployment. There are great challenges to match every packet into millions of flows in high speed network link. A 3-phase measurement method for IP traffic flow is proposed in this paper. The packets are captured and classified into the flows through hash table, search tree and linear table with this...
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