.. _firefox-tor-linux:

************************************
Setting up Firefox with Tor on Linux
************************************

.. warning::
  This guide assumes you have completed :ref:`setting up Tor for Linux<tor-linux>`. Please visit this section first before you proceed as it is required for Firefox to properly work with Tor.

Once Tor is setup on your system, you can proceed to setup Firefox.

Next, in order to tell Firefox which urls to use Tor for, you need a `Proxy Auto Config` file. We have one hosted `here <https://registry.start9labs.com/sys/proxy.pac>`_. To get it, you can run:

.. code-block::

  sudo wget -P /etc/tor https://registry.start9labs.com/sys/proxy.pac

Now open your Firefox web browser, and select preferences:

.. figure:: /_static/images/tor/firefox_preferences.png
  :width: 80%
  :alt: Firefox preferences screenshot

  Select :menuselection:`Settings --> Preferences`

Search for the term “proxy” in the search bar in the upper right, then select the button that says `Settings…`:

.. figure:: /_static/images/tor/firefox_search.png
  :width: 80%
  :alt: Firefox search screenshot

This should open a menu that will allow you to configure your proxy settings. Select `Automatic proxy configuration URL` and paste in:

.. code-block::

  file:///etc/tor/proxy.pac

Then, check the box labeled `Proxy DNS when using SOCKS v5`:

.. figure:: /_static/images/tor/firefox_proxy.png
  :width: 80%
  :alt: Firefox proxy settings screenshot

Click :code:`OK` and then restart Firefox for the changes to take effect.

Now you’re all set! You should now be able to navigate to :code:`.onion` URLs in Firefox. This means you can bookmark Cups Messenger, and use your Bitwarden Tor address in the `Bitwarden Firefox Plugin <https://addons.mozilla.org/en-US/firefox/addon/bitwarden-password-manager/>`_.