T.O.R.

The Onion Router

Agenda

What is TOR?How does TOR work?Why use TOR?How to use TOR?TOR + Java app

What is TOR?

TOR is free software and an open network that helps to save anonymity

TOR works as proxy server for TCP applications

TOR works over Internet and adds additional layer of networking

How does TOR work?

Your computer gets node list from one of directory servers. You may choose region or country where exit node is located

How does TOR work?

Your computer picks random path to exit node specified and connects to that node. Exit node opens clear (unencrypted) connection to destination host

How does TOR work?

Second connection uses different random path even if exit node is the same

Why use TOR?

Improving anonymity

Communicate anonymously

Hide sites you have visited

Shady dealings …

Why use TOR?

Pretending foreigner

Access sites, available only for residents of some country

Access sites, unavailable for your country

( hi, Russia )

How to use TOR?

Browser bundles

For dummies All-in-one solution No configuration

needed

https://www.torproject.org/projects/torbrowser.html.en

How to use TOR?

TOR standalone proxy

Use with any app with proxy support

Windows/MacOS/Linux/Android clients

https://www.torproject.org/download/download-unix.html.en

https://play.google.com/store/apps/details?id=org.torproject.android

TOR + Java

Using TOR proxy app

Pro’s: just configure your app for proxy usage

Con’s: needs additional software install and set up

https://www.torproject.org/download/download-unix.html.en

TOR + Java

Using java libraries

Pro’s: gives you full control; no additional software needed

Con’s: needs a bit more coding

https://silvertunnel.org/netlib.html

https://stem.torproject.org/index.html

Summary

What isWhy we need

How to use

The main purpose of TOR is keeping in secret your identity and internet activity. It’s important nowadays as governments and corporations like Google and Facebook are spying on people.Created to make information exchange secure, TOR also is used for some other reasons…