Soranun Jiwasurat

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Worms are a serious threat to Internet security. The past research on worm has been focused on mathematical modeling, numerical analysis, and simulation in addition to proposed defense strategies. We believe a fine-grained, packet-level emulation of worm propagation in enterprise networks is highly beneficial for the deep understanding of worm dynamics and(More)
We present a simple, deterministic mathematical model for the spread of randomly scanning and bandwidth-saturating Internet worms. Such worms include Slammer and Witty, both of which spread extremely rapidly. Our model, consisting of coupled Kermack-McKendrick (a.k.a. stratified susceptibles-infectives (SI)) equations, captures both the measured scanning(More)
We describe a hierarchical traffic shaper-scheduler, Hierarchical SDRR (HSDRR), for flows of variable-length packets that is low-complexity (scales with the number of queues). That is, HSDRR can be used channelize the output link of a router to satisfy service-level agreements (token bucket constraints) struck at network-to-network boundaries. HSDRR is a(More)
Internet worm security threats have increased with their more advanced scanning strategies and malicious payloads. In this article, we extend our existing KMSim worm model to account for the self-destructive or removal/death behavior of worms. The modified model is then used to simulate the Witty and Blaster worms. Also in this paper we describe our(More)
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