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  <div id="breadcrumbs">
    <a href="<page index>">Home &raquo; </a>
    <a href="<page docs/documentation>">Documentation</a>
  <div id="maincol"> 
    <a id="RunningTor"></a>
    <h1><a class="anchor" href="#RunningTor">Running Tor</a></h1>
    <li><a href="<page docs/tor-doc-windows>">Installing Tor
    on Win32</a></li>
    <li><a href="<page docs/tor-doc-osx>">Installing Tor on
    Mac OS X</a></li>
    <li><a href="<page docs/tor-doc-unix>">Installing Tor on
    <li><a href="<page torbutton/index>">Installing
    Torbutton for Tor</a></li>
    <li><a href="<page docs/tor-doc-relay>">Configuring a
    Tor relay</a></li>
    <li><a href="<page docs/tor-hidden-service>">Configuring
    a Tor hidden service</a></li>
    <a id="Support"></a>
    <a id="UpToSpeed"></a>
    <h1><a class="anchor" href="#UpToSpeed">Getting up to speed on Tor's past,
    present, and future</a></h1>
    First, read the <a href="<page about/overview>">overview page</a> to get a
    basic idea of how Tor works, what it's for, and who uses it.
    <a href="<page download/download>">Install the Tor bundle</a> and try it out.
    Make sure you've got Firefox installed first, and be sure to read the
    <a href="<page download/download>#Warning">list of warnings</a> about ways you
    can screw up your anonymity. Look through the <a
    Browser Design Document</a>.
    Our <a
    href="<page docs/faq>">FAQ</a>
    covers all sorts of topics, including questions about setting up a client
    or relay, concerns about anonymity attacks, why we didn't build Tor in
    other ways, etc.
    There's a separate <a href="<page docs/faq-abuse>">Abuse FAQ</a> to answer
    common questions from or for relay operators.
    The <a href="<page eff/tor-legal-faq>">Tor Legal FAQ</a> is written by
    EFF lawyers, and aims to give you an overview of some of the legal issues
    that arise from The Tor Project in the US.
    <li>The <a href="<page docs/tor-manual>">manual</a>
    lists all the possible entries you can put in your <a
    href="<page docs/faq>#torrc">torrc
    file</a>. We also provide a <a href="<page docs/tor-manual-dev>">manual for
    the development version of Tor</a>.</li>
    <li>If you have questions, we have an IRC channel (for users, relay
    operators, and developers)
    at <a href="irc://irc.oftc.net/tor">#tor on irc.oftc.net</a>. If
    you have a bug, especially a crash bug, read <a
    to report a Tor bug</a> first and then tell us as much information
    about it as you can in
    <a href="https://bugs.torproject.org/tor">our bugtracker</a>.
    (If your bug is
    with your browser or some other application, please don't put
    it in our bugtracker.) The
    <a href="#MailingLists">tor-talk mailing list</a> can also be useful.
    <a href="<blog>">Tor has a blog</a>.
    We try to keep it updated every week or two with the latest news.
    Download and watch Roger's <a
    talk from Internet Days in Sweden</a>, which provides good background
    on how Tor works and what it's for.
    Learn about our censorship circumvention side: watch our 28C3
    talk in December 2011 on how governments have tried to block Tor (<a
    <a href="http://www.youtube.com/watch?v=GwMr8Xl7JMQ">youtube</a>, <a
    an <a
    of what to look for in a circumvention tool</a>,
    and the original "blocking-resistance and
    circumvention" talk from 23C3 in December 2006 (<a
    <a href="http://freehaven.net/~arma/slides-23c3.pdf">slides</a>, <a
    <a href="https://svn.torproject.org/svn/projects/design-paper/blocking.html">design

    Look through our <a href="#DesignDoc">Design
    Documents</a>. Notice that we have RFC-style specs to tell you exactly
    how Tor is built.

    There's a skeletal <a
    of items we'd like to tackle in the future</a>. Alas, many of those
    items need to be fleshed out more before they'll make sense to people
    who aren't Tor developers, but you can still get a general sense of
    what issues need to be resolved next.
    Download and watch Nick's "Technical changes since 2004" talk from
    Defcon in July 2007 (<a
    href="http://freehaven.net/~arma/Defcon15-Mathewson-Technical_Changes_since_you_Last_Heard_about_Tor.mp4">video</a>, <a
    Roger's "Current events in 2007" talk from 24C3 in December
    2007 (<a
    <a href="http://freehaven.net/~arma/slides-24c3.pdf">slides</a>,
    <a href="http://events.ccc.de/congress/2007/Fahrplan/events/2325.en.html">abstract</a>), and
    Roger's "Vulnerabilities in Tor" talk from 25C3 in December
    2008 (<a
    <a href="http://freehaven.net/~arma/slides-25c3.pdf">slides</a>).
    See Mike's "Securing the Tor network" talk from Defcon in July 2007
    (<a href="http://freehaven.net/~arma/Defcon15-Mike_Perry-Securing_the_Tor_Network.mp4">video</a>,
     <a href="http://freehaven.net/~arma/SecuringTheTorNetwork.pdf">slides</a>).
    It describes common ways to attack networks like Tor and how we try
    to defend against them, and it introduces the <a
    script collection.
    Learn about the <a
    proposal process for changing our design</a>, and look over the <a
    href="<spectree>proposals">existing proposals</a>.
    Our <a
    href="https://trac.torproject.org/projects/tor/wiki/org/sponsors">sponsor TODO list</a> starts with a
    timeline for external promises &mdash; things <a href="<page about/sponsors>">our
    sponsors</a> have paid to see done. It also lists many other tasks
    and topics we'd like to tackle next.
    Once you're up to speed, things will continue to change surprisingly fast.
    The <a href="#MailingLists">tor-dev mailing list</a> is where the complex
    discussion happens, and the #tor and #tor-dev IRC channels
    are where the rest of the discussion happens.
    <a id="MailingLists"></a>
    <h1><a class="anchor" href="#MailingLists">Mailing List Information</a></h1>
    <li>The <a href="https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-announce/">tor-announce
    mailing list</a> is a low volume list for announcements of new releases
    and critical security updates. Everybody should be on this list.
    There is also an
    <a href="http://rss.gmane.org/gmane.network.onion-routing.announce">RSS
    feed</a> of tor-announce at <a href="http://gmane.org">gmane.org</a>.</li>
    <li>The <a href="https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-talk/">tor-talk list</a>
    is where a lot of discussion happens, and is where we send notifications
    of prerelease versions and release candidates.</li>
    <li>The <a href="https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-relays/">tor-relays list</a>
    is where discussions about running, configuring, and handling your tor
    relay happen.  If you currently run a relay, or are thinking about doing
    so, this is the list for you.</li>
    <li>The <a href="https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-dev/">tor-dev list</a>
    is for posting by developers only, and is very low traffic.</li>
    <li>A list for <a href="https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-mirrors">mirror
    operators</a> for new website mirrors, and supporting <a href="<page
    getinvolved/mirrors>">current website mirrors</a>.</li>
    <li>A list for <a href="https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-commits/">svn and git
    commits</a> may be interesting for developers.</li>
    <li>An automated list for <a href="https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-bugs/">bug
    reports from trac</a> may be interesting for users and developers.</li>
    <a id="DesignDoc"></a>
    <h1><a class="anchor" href="#DesignDoc">Design Documents</a></h1>
    <li>The <b>design document</b> (published at Usenix Security 2004)
    gives our justifications and security analysis for the Tor design:
    <a href="https://svn.torproject.org/svn/projects/design-paper/tor-design.pdf">PDF</a> and
    <a href="https://svn.torproject.org/svn/projects/design-paper/tor-design.html">HTML</a>
    versions available.</li>
    <li>Our follow-up paper on <b>challenges in low-latency anonymity</b>
    (still in draft form) details more recent experiences and directions:
    <a href="https://svn.torproject.org/svn/projects/design-paper/challenges.pdf">PDF
    <li>Our paper at WEIS 2006 &mdash; <b>Anonymity Loves Company:
    Usability and the Network Effect</b> &mdash; explains why usability in
    anonymity systems matters for their security: <a
    <li>Our preliminary design to make it harder for large firewalls to
    prevent access to the Tor network is described in
    <b>design of a blocking-resistant anonymity system</b>:
    <a href="https://svn.torproject.org/svn/projects/design-paper/blocking.pdf">PDF draft</a> and
    <a href="https://svn.torproject.org/svn/projects/design-paper/blocking.html">HTML draft</a>.
    Want to <a href="<page getinvolved/volunteer>#Coding">help us build it</a>?</li>
    <li>The <b>specifications</b> aim to give
    developers enough information to build a compatible version of Tor:
    <li><a href="<specblob>tor-spec.txt">Main Tor specification</a></li>
    <li><a href="<specblob>dir-spec.txt">Tor
    version 3 directory server specification</a> (and older <a
    href="<specblob>dir-spec-v1.txt">version 1</a> and <a
    href="<specblob>dir-spec-v2.txt">version 2</a> directory
    <li><a href="<specblob>control-spec.txt">Tor control protocol
    <li><a href="<specblob>rend-spec.txt">Tor rendezvous
    <li><a href="<specblob>path-spec.txt">Tor path selection
    <li><a href="<specblob>address-spec.txt">Special hostnames in
    <li><a href="<specblob>socks-extensions.txt">Tor's SOCKS support
    and extensions</a></li>
    <li><a href="<specblob>version-spec.txt">How Tor version numbers
    <li><a href="<spectree>proposals">In-progress drafts of
    new specifications and proposed changes</a></li>
    <a id="NeatLinks"></a>
    <h1><a class="anchor" href="#NeatLinks">Neat Links</a></h1>
    <li>The <a href="<wiki>">Tor
    wiki</a> provides a plethora of helpful contributions from Tor
    users. Check it out!</li>
    list of supporting programs you might want to use in association with
    <li><a href="https://check.torproject.org/">The
    Tor detector</a> tries to guess if you're using Tor or not.</li>
    <li>Check out one of the Tor status pages, such as the <a
    href="https://atlas.torproject.org/">Atlas</a> page.
    Remember that these lists may not be as accurate as what your Tor
    client uses, because your client fetches its own directory information and
    examines it locally.</li>
    <li>Read <a
    papers</a> (especially the ones in boxes) to get up to speed on the field
    of anonymous communication systems.</li>
    <a id="Developers"></a>
    <h1><a class="anchor" href="#Developers">For Developers</a></h1>
      Browse the Tor <b>source repository</b>:
        <li><a href="<gitrepo>">Browse the repository's source tree directly</a></li>
        <li>Git and SVN access:
            <li><kbd>git clone https://git.torproject.org/git/tor</kbd></li>
            <li>The development branch is <kbd>master</kbd>.  The active maintenance branches are <kbd>maint-0.2.1</kbd> and <kbd>maint-0.2.2</kbd>.</li>
            <li><kbd>svn checkout https://svn.torproject.org/svn/website/trunk website</kbd></li>
        <li><a href="https://gitweb.torproject.org//githax.git?a=blob;f=doc/Howto.txt;hb=HEAD">Basic instructions for using Git to contribute to Tor software.</a></li>
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