According to the features of worm propagation, a novel model for proactive worm prevention based on peer-to-peer (P2P) networking technologies is proposed in this paper. At first, we present the backgrounds and security issues related to P2P networks. Then, a structured P2P overlay network designed for worm prevention is specified. Based on that, we present the methods for Internet worm forecas...

1. What are P2P MANETs? A mobile ad hoc network (MANET) is a collection of mobile nodes that dynamically self organize in a wireless network without using any pre-existing infrastructure. In a MANET, the applications are typically “peer-to-peer” rather than “client-server”. Moreover, a MANET is often built to support a specific application, thus the networking is application-driven. For these r...

Peer-to-Peer system has emerged as a promising technology to provide video-on-demand service. Several P2P-VoD systems have been deployed and attracted a large population of viewers. However, it is challenging to design P2P media streaming networks because of the stringent time constraints on the delivered media streams, which require more efficient and resilient overlay architectures. Compared ...

Overlay networks, such as P2P, Grid, and CDN, have been widely deployed over physical IP networks. Since simultaneous overlay networks compete for network resources and their selfish behaviors disrupt each other, we consider cooperative mechanisms for overlay networks to enhance the collective performance and improve the QoS at the application level. In this paper, we proposed a cooperative mec...

Computers creating a peer-to-peer (P2P) network act as both client and server, relaying messages to neighboring computers. This removes the need for centralized servers and creates a self-contained overlay network on top of networked infrastructures. The concept of P2P computing was developed to enable content distribution which is beyond the means of traditional client-server systems. Since th...

Peer-to-Peer (P2P) networks without central entities, such as Gnutella or JXTA, generally suffer under a high signaling load resulting in poor efficiency. The main reason therefore is the necessity to flood requests in the overlay, since in most P2P protocols the nodes are not provided with any information about the P2P overlay network topology. This paper therefore addresses this application-l...

This work describes a novel locality-aware structured peer-to-peer (P2P) overlay network, referred to as LAPTOP. One important aspect of constructing a structured P2P network is how to reduce the maintenance overheads while maintaining efficient routing and network locality. LAPTOP organizes nodes into a treebased overlay network in a self-organizing manner and builds the routing table by takin...

Without assuming any knowledge of the underlying physical topology, the conventional P2P mechanisms are designed to randomly choose logical neighbors, causing a serious topology mismatch problem between the P2P overlay network and the underlying physical network. This mismatch problem incurs a great stress in the Internet infrastructure and adversely restraints the performance gains from the va...

Two-layer hierarchy unstructured peer-to-peer (P2P) systems, comprising an upper layer of super-peers and an underlying layer of ordinary peers, are commonly used to improve the performance of large-scale P2P systems. However, the optimal super-peer network design involves several requirements including super-peer degree, network diameter, scalability, load balancing, and flooding performance. ...

Active Peer-to-Peer (P2P) worms present serious threats to the global Internet by exploiting popular P2P applications to perform rapid topological self-propagation. Active P2P worms pose more deadly threats than normal scanning worms because they do not exhibit easily detectable anomalies, thus many existing defenses are no longer effective. We propose an immunity system with Phagocytes — a sma...