Peer-to-peer networks have gained a lot of attention over the last couple of years, mainly due to the popularity of the free multimedia file-sharing program Napster and a legal battle around it. Being open by nature P2P systems represent an ideal environment for various types of malicious intrusions. The problem of securing hosts on P2P network while keeping the openness of the system has been ...

The use of peer-to-peer (P2P) applications is growing dramatically. It concerns applications like Gnutella, Kazaa or eDonkey. These applications sometimes represent as most as 50% of Internet traffic. So, it became important for ISPs to detect these applications. As the TCP port can change, an identification based on TCP gate is not possible. Main goal of this work is to use knowledge about TCP...

A remote display system, which allows users to view a desktop image and to control a remote machine, can be valuable for small group communication in which each member is operating several machines. However, conventional server/client based remote display systems have not been considered for group communication or multi-machines environments. Most of these systems restrict the direction of tran...

Peer-to-peer (P2P) computing offers new opportunities for building highly distributed data systems. Unlike client-server computing, P2P can operate without central coordination and offer important advantages such as a very dynamic environment where peers can join and leave the network at any time; direct and fast communication between peers, and scale up to large number of peers. However, most ...

Peer-to-peer (P2P) file sharing systems generate a major portion of the Internet traffic, and this portion is expected to increase in the future. We explore the potential of deploying proxy caches in different autonomous systems with the goal of reducing the cost incurred by Internet service providers and alleviating the load on the Internet backbone. P2P traffic is more complex than caching ot...

Ever increasing use of heterogeneous networks including mobile devices and ad-hoc sensor networks signifies the role of such information system properties as openness, autonomy, cooperation, coordination, etc. Agent-based service-oriented Peer-to-Peer (P2P) architecture provides attractive (if not single) design and implementation paradigm for such systems. This trend implies coherent evolution...

Locating contents is an essential function, but it presents a very diÆcult and challenging problem for large-scale Peer-to-Peer (P2P) systems. Many P2P systems, protocols, architectures, and search strategies are proposed for this problem. In this paper, we focus on the selforganization of a community structure based on user preferences for P2P systems. We propose these methods to improve P2P s...

Geographic Information System (GIS) based on Internet is a promising research field, which brings new approaches to access, share and disseminate geographic information. However, current Internet-based GIS relies heavily on centralized server, which inevitably has drawbacks such as single points of failure and network congestion etc. In recent years, Peer-to-Peer (simply P2P) and Web services a...

Peer-to-Peer (P2P) content sharing systems have experienced an explosive growth, and now dominate large fractions of both the Internet users and traffic volume. However, due to the self-organization and self-maintenance nature of P2P overlay networks, these systems are vulnerable to the content pollution, where attackers aggressively inject a large quantity of polluted content into the systems....