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Safety is one of the most important issues of communication systems, especially for wireless communication systems which use insecure wireless channel to communicate with each other. In RFID systems, data transmission between tags and readers or sometimes even data transmission between readers and back-end database uses the wireless channel. There are some risks inherent in RFID systems, such as counterfeit...
With the rapid development of Internet applications and the fast increasing number of users, the traditional network protocol layered only by the basic communication functions can create barriers rather than stimulants to its further development. This paper analyzes the problems and challenges of the classic Internet communication protocol, explicit the important features that NGI (next generation...
Hash tables are a fundamental data structure in many network applications, including route lookups, packet classification and monitoring. Often a part of the data path, they need to operate at wire-speed. However, several associative memory accesses are needed to resolve collisions, making them slower than required. This motivates us to consider minimal perfect hashing schemes, which reduce the number...
In this paper, we propose a method to find the anomalous behaviors in network traffic. We map the network connection records into different feature spaces typically of high dimension according to their protocols and services. In training, we perform clustering to group training data points into clusters, from which we select some clusters as normal and known-attack profile according to a simple, but...
A modified scheme in probabilistic packet marking (PPM) for IP traceback against distributed denial-of-service attack is presented. This method, ID-based PPM, is proposed to improve the original PPM's complexity of fragments combination through clustering these fragments in advance. Furthermore, by reducing the time of fragments combination, the attacking path reconstruction and attack response time...
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