These keywords were added by machine and not by the authors. In this paper, we show a technique to find such proxy and caching, explain the rationale behind the decision, and prove its effectiveness through experimentation. Caching in our paper is primarily for providing publisher anonymity and security. And our technique provides caching of a retrieved data item on the reverse path back to the requestor. Temporary proxy doesn’t have this problem. However it is a sort of compromise from P2P point of view: we are introducing something similar to a control center that could become a bottleneck in the network.

The fixed proxy might be convenient to use and is useful when loaded with additional features such as encryption as in Onion routing. But it differs from it in that the proxy node is selected dynamically for each session and not fixed as in Onion routing. Our technique is similar to Onion routing in that it uses a proxy node to hide the identity of the client and the server. Most of existing technique mostly focus on how to provide the initiator anonymity and privacy, but leave the anonymity of the server. A critical problem in a Peer-to-Peer file sharing system is how to protect the anonymity of agent nodes when providing efficient data access services.

Gnutella 2 p2p downloader