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To support multiple on-demand services over fixed communication networks, network operators must allow flexible customization and fast provision of their network resources. One effective approach to this end is network virtualization, whereby each service is mapped to a virtual subnetwork providing dedicated on-demand support to network users. In practice, each service consists of a prespecified sequence...
This paper presents a distributed system for real-time anomaly detection in backbone. The backbone traffic is so huge that it is difficult to monitor abnormal traffic by traditional methods. Our system is based on Hadoop, an open source framework, and used to detect the abnormal traffic. Firstly, We establish a precise regression model to describe the network traffic. Secondly, distributed system...
Botnet has become a prevalent platform for malicious attacks, which poses a significant threat to Internet security. Recently, botnets are inclined to utilize HTTP to route their command and control (C&C) communication instead of using the protocol Internet Relay Chat (IRC). And these web-based C&C bots try to blend into normal HTTP traffic, which makes them more difficult to be identified...
These years, P2P applications have multiplied, evolved and take a big part of Internet traffic workload. Identifying the P2P traffic and understanding their behavior is an important field. Some port, payload and transport layer feature based methods were proposed. P2P traffic identification methods by examining user payload or well-defined port numbers no longer adapt to current P2P applications....
These years, P2P applications are very popular on the Internet and take a big part of the Internet traffic workload. Identifying the P2P traffic and understanding their behavior is an important field. However, previous P2P traffic identification methods by examining user payload or well-defined port numbers no longer adapt to current P2P applications. In this paper, we develop a statistical methodology...
P2P IPTV applications start to be very popular on the Internet. Previous work on measuring and analyzing P2P IPTV traffic mostly focuses on a specific type of P2P applications or the behavior characteristics of P2P IPTV nodes acting as a client. In this paper, we have undertaken an in-depth measurement and modeling study of the most common P2P IPTV applications, specially focusing on the behavior...
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