Blocking of Mischievous Users in Anonymizing Networks Using Nymble System: A Survey Study

A Tor network popularly known as an anonymous network provides a way to access internet services anonymously through a series of routers without revealing users identity. A user almost remains unknown in the public networks and makes use of various facilities of his interest. Networks such as “Tor (The Onion Router)”,”Crowds” and “I2P” gained popularity in the past several years, but success of such likewise networks however has been limited by users engaging this anonymity for harmful purposes such as spoil the appearance of popular websites. As a result of this website administrators block the entire network to which the system of malicious user is connected. Hence, because of malicious users un-malicious users have to suffer. To address this problem, we present a Nymble system in which a server can “blacklist” malicious users without affecting un-malicious users and also maintaining anonymity across the network. KeywordsAnonymity, revocation, pseudonym.