Mantis: A lightweight, server-anonymity preserving, searchable P2P network
Stephen Bono, Christopher Soghoian, Fabian Monrose · 2004
We introduce Mantis, a searchable, peer-to-peer (P2P) network of anonymous nodes aimed at protecting the privacy of individuals acting as servers in the network. In order to minimize the traffic relayed by peers, servers transfer data directly to clients via a separate, source-spoofed UDP stream. This is extremely important as users of a P2P system are content to give up bandwidth while downloading or uploading, but are unwilling to donate the majority of their bandwidth in order to relay traffic for other peers. By relaxing the requirement of full client anonymity, Mantis enables efficient data transfers from anonymous servers while limiting the bandwidth costs incurred by other peers participating in the network.