Tallow is similar to running Tor as a transparent proxy under Linux or MacOS. All non-Tor traffic is blocked and prevented from leaving your PC. This stops certain kinds of leaks, such as the "DNS leak" problem. Tallow is also transparent. This means your applications will not be aware that traffic is being diverted via Tor. You can therefore use your preferred web browser or any other program that connects via the Internet with zero configuration. But beware! Unlike the TorBrowserBundle, Tallow does not make any attempt to anonymize content sent though the Tor network. This may include cookies or other information that can identify you. For this reason Tallow is not intended to be a complete strong anonymity solution by itself. See the warnings on the developers download page. Related information: https://trac.torproject.org/projects/tor/wiki/doc/TransparentProxy