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A common technique hackers use to break into a computer host is to route their traffic through a chain of stepping-stone hosts. There is no valid reason to use a long connection chain for remote login such as SSH connections. One way to protect a host of being attacked is to identify long connection chains connecting into the host. This paper proposes a novel method to identify long connection chains...
Stepping-stone attack in network intrusion detection are attackers who use a sequence of intermediate (or so called stepping-stone) hosts to initiate attacks in order to hide their origins. We investigate a number of dynamic programming based pattern recognition approaches and our novel algorithm for detecting correlation and similarity of two connections not only into and out of a single stepping...
It is generally agreed that there is no valid reason to use a long connection chain for remote login such as SSH connection. Most of the stepping-stone detection algorithms installed on a host were designed to protect the victim of a third party downstream from where the algorithm is running. It is much more important for a host to protect itself from being a victim. This project uses an approximated...
The network traffic emulation is used in generating background traffic for IDSs evaluation. The Background traffic can be used to evaluate the false positive level and the performance of the misuse IDSs and help training normal behavior profiles for anomaly IDSs. Currently the emulation methods for the background traffic are either restricted by the performance bottleneck of the software and hardware,...
Under current synchronous portal rendering mechanism, a user has to wait until all the portlets are ready for the next interaction. In the case of consuming remote portlets with Web services for remote portlets (WSRP) specification, the situation can be worse. To improve user experiences, an asynchronous mechanism is proposed in this paper leveraging popular Ajax technology. We also discussed several...
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