The use of peer-to-peer systems for sharing information, files and other resources has risen dramatically over the last three years. File sharing is the ‘killer app’ that has driven this explosion in popularity. The first generation of peer-to-peer file sharing systems, including Napster, Morpheus and Kazaa, followed the traditional client-server paradigm. However, concerns over the legality an...

Although file and printer sharing services have been deployed almost ubiquitously for a long time as part of Microsoft Windows, only recent peer-to-peer applications popularized file-sharing on a global scale. As the Windows CIFS protocol was designed for local area networks, its use has been confined to relatively small environments. We propose a mechanism to set up spontaneous virtual groups ...

Peer-to-peer (P2P) file-sharing applications generate a large part of today's Internet traffic. The large volume of this traffic (thus high potential caching benefits) and the large cache sizes required (thus nontrivial costs associated with caching) only underline that efficient cache replacement policies are important in this case. File popularity in P2P file-sharing networks does not follow ...

Abstract—In a content distribution (file sharing) scenario, the initial phase is delicate due to the lack of global knowledge and the dynamics of the overlay. An unwise piece dissemination in this phase can cause delays in reaching steady state, thus increasing file download times. After showing that finding the scheduling strategy for optimal dissemination is computationally hard, even when th...

This study investigates self-reported practices and values of Internet-based cultural consumption in relation to illegal file sharing in Sweden during 2007-2012. It is based on more than 1.000 posts in an Internet discussion forum and focuses on expressed senses of guilt, whether file sharing is right or wrong, buying media, and dimensions of stakeholders and media genres. This note presents wo...

File-sharing worms have been terrorizing Peer-to-peer (P2P) systems in recent years. Existing defenses relying on users’ individual recoveries or limiting users’ file-sharing activities are ineffective. Automated patching tools such as Microsoft Windows Update and Symantec Security Update are currently the most popular vehicles for eliminating and containing Internet worms, but they are not nec...

Many worm detectors have been proposed and are being deployed, but the literature does not clearly indicate which one is the best. New worms such as IKEE.B (also known as the iPhone worm) continue to present new challenges to worm detection, further raising the question of how effective our worm defenses are. In this paper, we identify six behavior-based worm detection algorithms as being poten...

A number of new technologies such as the MP3 music compression format and the Napster file sharing network are creating new opportunities for consumers’ activities with music media. In this paper we explore current practice with both conventional and new forms of media in order to better understand what the future may hold for music consumers. We interviewed 36 music enthusiasts: 12 teenaged an...

This paper is motivated by the problem of poor searching efficiency in decentralized peer-to-peer file-sharing systems. We solve the searching problem by considering and modeling the basic trade-off between forwarding queries among peers and maintaining lookup tables in peers, so that we can utilize optimized lookup table scale to minimize bandwidth consumption, and to greatly improve the searc...

The number and variety of IP applications had a tremendous increase in the last few years. Besides, Internet applications of end users are changing with the wide spread of high performance PCs connected through broadband links. An accurate mapping of traffic to applications is important for a wide range of network management tasks, like traffic engineering, service differentiation, performance/...