tor-webwml.git

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## translation metadata
# Revision: $Revision$
# Translation-Priority: 3-low
#include "head.wmi" TITLE="Tor Project: Pluggable Transports" CHARSET="UTF-8"
<div id="content" class="clearfix">
  <div id="breadcrumbs">
    <a href="<page index>">Home &raquo; </a>
    <a href="<page docs/documentation>">Documentation &raquo; </a>
    <a href="<page docs/pluggable-transports>">Pluggable Transports</a>
  </div>
  <div id="maincol">
    <h2>Tor: Pluggable Transports</h2>
    <hr>
    <p>
    An increasing number of censoring countries are using Deep Packet
    Inspection (DPI) to classify Internet traffic flows by protocol.
    While Tor uses <a href="<page docs/bridges>">bridge relays</a> to
    get around a censor that blocks by IP address, the censor can use
    DPI to recognize and filter Tor traffic flows even when they connect
    to unexpected IP addresses.
    </p>
    <p>
    Pluggable transports transform the Tor traffic flow between the client
    and the bridge. This way, censors who monitor traffic between the
    client and the bridge will see innocent-looking transformed traffic
    instead of the actual Tor traffic.
    External programs can talk to Tor clients and Tor bridges using the <a
href="https://gitweb.torproject.org/torspec.git/tree/pt-spec.txt">pluggable
transport API</a>, to make it easier to build interoperable programs.
    </p>
    <hr>
    <ul>
    <li><a href="<page projects/obfsproxy>"><b>Obfsproxy</b></a> is a Python framework for implementing new
    pluggable transports. It uses Twisted for its networking needs, and
    <a href="https://gitweb.torproject.org/pluggable-transports/pyptlib.git/tree/README.rst">pyptlib</a>
    for some pluggable transport-related features. It supports the
    <a href="https://gitweb.torproject.org/pluggable-transports/obfsproxy.git/tree/doc/obfs2/obfs2-protocol-spec.txt">obfs2</a>
    and
    <a href="https://gitweb.torproject.org/pluggable-transports/obfsproxy.git/tree/doc/obfs3/obfs3-protocol-spec.txt">obfs3</a>
    pluggable transports. Maintained by asn. <br>
    Status: <a href="#download">Deployed</a>
    </li>
    <li><a href="https://crypto.stanford.edu/flashproxy/"><b>Flashproxy</b></a> turns ordinary web browsers into bridges using
    websockets, and has a little python stub to hook Tor clients to the
 
 
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