Introducing Tarzan, a Peer-to-Peer Anonymizing Network Layer
The ultimate goal of Internet anonymization is to allow a host to communicate with a non-participating server in such a manner that nobody can determine his identity. Toward this goal, the authors envision an Internet-wide pool of nodes, numbered in the millions that relay each others' traffic to gain anonymity. This paper describes a design aimed at realizing that vision. First, however, the authors discuss why less ambitious approaches are not adequate. In the simplest alternative to their vision, a host connects to a server through a proxy, such as a Anonymizer.com. This system fails if the proxy reveals a user's identity or an adversary can observe traffic on the proxy's network.