Introduction - If you have any usage issues, please Google them yourself
The Napster and Gnutella file-sharing software represented has become the most rapidly growing Internet application. This runs on a number of peer nodes (Peer) over the network is known as peer networks. With the growth of network size, etc., scalability is an urgent need to address the issue has become a research hotspot. This paper reviews the research on the status of such networks, first introduced on the popular Internet peer network system and its limitations, and then a variety of recent large-scale peer networks to support distributed hash table lookup system was review, introduced a new generation of systems based on these to find the file sharing system, discussed on other network security issues and that further research directions.