If you want to save money and are not afraid to deal with Linux, you can put together your own Onion Pi one step at a time.įigure 2: A prebuilt and preconfigured Onion Pi, as offered by Adafruit. Because of its energy efficiency and small physical size, the Raspberry Pi provides a perfect basis for your own Tor router.Īdafruit offers such a Rasp Pi and Tor combination for around US$ 90 under the product name "Onion Pi" ( Figure 2). In that case, you could ten use Tor without any problems on all devices, from smartphones to smart TVs and PCs. If this point also works as the Wi-Fi access point, using Tor becomes even easier.
In this type of scenario, operating Tor on one central point in your home network makes more sense. Even then, Tor could only be used with applications that also communicate via SOCKS. However, to use Tor throughout your home LAN, you would need to install it on each and every device, including smartphones and tablets. Only the entry guard has that information, but it does not know the target server.įigure 1: Tor uses entry and middle nodes to send the data over an exit node to the target server.Īs soon as your computer is outfitted with a SOCKS-compliant browser and a Tor proxy, you are ready to conceal its IP address. Neither the exit node nor the target server can identify the originator of the request. The resulting connection runs over middle and exit nodes to the targeted server all data remains encrypted as it moves from the client to the Tor exit node. From this list of nodes, the client chooses a so-called "entry guard" for entry into the network. At startup, the client requests a list of Tor nodes from a directory server for the Tor network and downloads them. Since December 2006, the non-profit foundation "Tor Project" has been promoting the development of the software.įigure 1 provides an overview of how Tor functions.
Shortly thereafter, the US Navy Research Laboratory, which had already been working with similar methods, took note of Tor and supported the project. Tor originated at Cambridge University, where it was christened "The Onion Router," because its multi-level approach to packet transfers resembles the layers of an onion.
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