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In this paper, we investigate the scheduling problem with multi-resource allocation in cloud computing environments. In contrast to existing work that focuses on flow-level scheduling, which treats flows in isolation, we consider dependency among subtasks of applications that imposes a partial order relationship in execution. We formulate the problem of Multi-Resource Partial-Ordered Task Scheduling...
Link flooding attack (LFA), as a new type of DDoS attack, can degrade or even cut off network connectivity of a target area. This attack employs legitimate, low-density flows to flood a group of selected links. Therefore, these malicious flows can hardly be distinguished by traditional schemes. In this paper, we propose a scheme called Woodpecker, which makes the LFA more difficult to take effect...
Application-layer multicast (ALM) has recently emerged as a promising solution for diverse group-oriented applications. Unlike dedicated routers in IP multicast, the autonomous end-hosts are generally unreliable and even selfish. A strategic host might cheat about its private information to affect protocol execution and, in turn, to improve its individual benefit. Specifically, in a link-weighted...
Recent years, the wide spread peer-assisted video-on-demand (VoD) systems have generated a great attention on how to optimize these applications. In particular, how to improve the system performance has become a popular issue. In this paper, we propose how to minimize server bandwidth to satisfy user demand in peer-assisted VoD systems. Furthermore, a linear programming method is presented to calculate...
With the development of polymorphic worms, worms do greater harm to networks. The content-based signature generation of polymorphic worms has been a challenge for network security. This paper presents a fast signature generation method for polymorphic worms. The main feature of this method is clustering network normal traffic to create a white list before carrying out a comprehensive analysis of malicious...
Instant Messaging (IM) service is a killer application in the Internet. Due to the problem of IM spam (SPIM), building an effective anti-spim method is an important research topic. At present, most of anti-spim solutions are based on email-spam prevention techniques, which are not directly applicable to anti-spim. In this paper, we present a new anti-spim method SpimRank, which integrates trust and...
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