
Through this process the onion proxy manages networking traffic for end-user anonymity. Tor employs cryptography in a layered manner (hence the 'onion' analogy), ensuring forward secrecy between routers. This software connects out to Tor, periodically negotiating a virtual circuit through the Tor network. Users of the Tor network run an onion proxy software on their machines, which presents a SOCKS interface to its clients.


Its primary goal is to enable online anonymity by protecting against traffic analysis attacks. The Tor Project ( The onion routing) is an open source implementation of onion routing that provides free access to an anonymous proxy network.
