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For example, the user-agent property of the browser was set to `Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3`, as of Tails 0.21 and TBB 2.3.25-13. This value preserves your anonymity even if the operating system installed on the computer is Windows NT and you usually run Firefoxstring of *Tor Browser* includes
<em>Windows NT</em> but this value preserves your anonymity even if
you run Windows NT. On the other hand, changing this value makes you distinguishable from
others Tor users and br users of *Tor Browser* and, as a
consequence, weakens your anonymity.

For example, the user-agent string of *Tor Browser* includes
<em>Windows NT</em> but this value preserves your anonymity even if
you run Windows NT. On the other hand, changing this value makes you distinguishable from
other users of *Tor Browser* and, as a
consequence, weakens your anonymity.

This second synchronization is made by sending HTTPS queries through Tor to severals
websites and deducing a correct time from their answers. TheYou can see the
list of websites that could be queried in this process can be found in `Tails can connect to in *[[!tails_gitweb config/chroot_local-includes/etc/default/htpdate.pools desc="/etc/default/htpdate`.pools"]]*.

This second synchronization is made by sending HTTPS queries through Tor to several
websites and deducing a correct time from their answers. You can see the
list of websites that Tails can connect to in *[[!tails_gitweb config/chroot_local-includes/etc/default/htpdate.pools desc="/etc/default/htpdate.pools"]]*.

This is currently not possible easily using Tails.<h2 id="relay">Can I help the Tor network by running a relay or a bridge in Tails?</h2>

<h2 id="relay">Can I help the Tor network by running a relay or a bridge in Tails?</h2>

<p>If a software is not included in Tails, but is included in Debian, you can use
the [[aAdditional s
Software|doc/first_steps/persistenct_storage/configure#additional_software]] feature of
the pPersistent volumStorage to install it automatically at the beginning of each working session.every time you start Tails.</p>

<p>If a software is not included in Tails, but is included in Debian, you can use
the [[Additional
Software|doc/persistent_storage/configure#additional_software]] feature of
the Persistent Storage to install it automatically every time you start Tails.</p>