Resource discovery is a fundamental problem in grid systems. Original approaches to provide grid resource discovery services are either centralized or hierarchical and proved to be inefficient when the scale of grid systems rapidly increases. A P2P network is a distributed system with the attributes of dynamicity and scalability. P2P systems have the same goal as grid systems: to share and exch...

A lot of research papers discussed Distributed Hash Table (DHT) based p2p systems to promise that idle resources may be efficiently harvested. However, p2p systems are composed of components with extremely heterogeneous availabilities and they will generate heavy information maintenance traffic to keep the efficiency of DHT based p2p systems under churn. In this paper, we suggest a dynamic node...

Supervisory Control and Data Acquisition (SCADA) systems are used to control and monitor critical processes. Modern SCADA systems are increasingly built with off-the-shelf components simplifying their integration into existing networks. The benefits of increased flexibility and reduced costs are accompanied by newly introduced challenges regarding SCADA security/dependability. Peer-to-Peer (P2P...

A robust real-time video communication service over the Internet in a distributed manner is an important challenge, as it influences not only the current Internet structure but also the future Internet evolution. In this context, Peer-to-Peer (P2P) networks are playing an imperative position for providing efficient video transmission over the Internet. Recently, several P2P video transmission s...

Video-over-IP applications have recently attracted a large number of users on the Internet. Traditional clientserver based video streaming solutions incur expensive bandwidth provision cost on the server. Peer-to-Peer (P2P) networking is a new paradigm to build distributed network applications. Recently, several P2P streaming systems have been deployed to provide live and on-demand video stream...

Current Voice over IP (VoIP) and Instant Messaging (IM) systems follow a client-server model, or require clients and network elements supporting non-standard protocols. In this paper, we present a standards-based, fully decentralized peer-to-peer (P2P) communications system. This system can be used in situations where constant Internet connectivity is not possible, and supports ad hoc, ephemera...

Peer-to-Peer (P2P) systems are distributed systems composed of up to millions of functionally equivalent entities (peers), which form P2P overlay networks on top of physical networks to communicate. The functionality of a peer is implemented by a P2P application which de nes the behavior of the whole P2P system. The equivalence of peers is realized by providing client functionality as well as s...