wiki/src/download.html

   1 [[!meta title="Download, verify and install"]]
   2
   3 <strong>Tails is [[Free Software|doc/about/license]], you can download it, use it and
   4 share it without restriction.</strong>
   5
   6 <div id="page-download">
   7
   8 [[!toc levels=1]]
   9
  10 <div id="first_time">
  11
  12         <h1 class="bullet-number-one">First time user?</h1>
  13
  14         <div class="caution">
  15         <ul>
  16         <li>If you don't know what a metadata or a man-in-the-middle attack
  17         is.</li>
  18         <li>If you think no-one can eavesdrop on your communications
  19         because you are using Tor.</li>
  20         <li>If you have no notion on how Tails works.</li>
  21         </ul>
  22
  23         <p><strong>Then, check first the [[about]] and
  24         [[warning|doc/about/warning]] pages to make sure that Tails is the right tool
  25         for you and that you understand well its limitations.</strong></p>
  26         </div>
  27
  28 </div>
  29
  30 <div id="download_iso" class="container">
  31
  32         <h1 class="bullet-number-two">Download the ISO image</h1>
  33
  34         <p>You will download Tails in the form of an <span
  35         class="definition">[[!wikipedia ISO_image desc="ISO image"]]</span>: a
  36         single file that you will later burn on a DVD or installed onto a USB
  37         stick.</p>
  38
  39 <div id="http">
  40
  41         <h2>Direct download</h2>
  42
  43         <h3>Latest release</h3>
  44
  45         <p>
  46         <a class='download-file' href=[[!inline pages="inc/stable_i386_iso_url" raw="yes"]]>
  47         Tails [[!inline pages="inc/stable_i386_version" raw="yes"]] ISO image</a>
  48         </p>
  49
  50         <h3>Cryptographic signature</h3>
  51
  52         [[!inline pages="lib/download_stable_i386_iso_sig" raw="yes"]]
  53
  54         <p>If you're not sure what the cryptographic signature is,
  55         please read the part on [[verifying the ISO
  56         image|download#verify]].</p>
  57
  58         <h3>Set up a web mirror</h3>
  59
  60         <p>If you're running a web server, you're most welcome to help us spread
  61         Tails by [[setting up a web mirror|contribute/how/mirror]].</p>
  62
  63 </div> <!-- #http -->
  64
  65 <div id="bittorrent">
  66
  67         <h2>BitTorrent download</h2>
  68
  69         <h3>Latest release</h3>
  70
  71         <p>
  72         <a class='download-file' href=[[!inline pages="inc/stable_i386_torrent_url" raw="yes"]]>
  73         Tails [[!inline pages="inc/stable_i386_version" raw="yes"]] torrent</a>
  74         </p>
  75
  76         <h3>Cryptographic signature</h3>
  77
  78         <p>The cryptographic signature of the ISO image is also included in the Torrent.</p>
  79
  80         <p>Additionally, you can verify the <a href=[[!inline
  81         pages="inc/stable_i386_torrent_sig_url" raw="yes"]]>signature of
  82         the Torrent file</a> itself before downloading it.</p>
  83
  84         <h3>Seed back!</h3>
  85
  86         <p>Seeding back the image once you downloaded it is also a nice
  87         and easy way of helping spread Tails.</p>
  88
  89 </div> <!-- #bittorrent -->
  90
  91 </div> <!-- #download_the_image .container -->
  92
  93 <div id="verify">
  94
  95         <h1 class="bullet-number-three">Verify the ISO image</h1>
  96
  97         <p>It is important to check the <span class="definition">[[!wikipedia
  98         Data_integrity desc="integrity"]]</span> of the ISO image you downloaded
  99         to make sure that the download went well.</p>
 100
 101         <div class="caution">
 102         <p>Those techniques rely on standard HTTPS and <span
 103         class="definition">[[!wikipedia Certificate_authority desc="certificate
 104         authorities"]]</span> to make you trust the content of this website.
 105         But, [[as explained on our warning
 106         page|doc/about/warning#man-in-the-middle]], you
 107         could still be victim of a man-in-the-middle attack while using HTTPS.
 108         On this website as much as on any other of the Internet.</p>
 109
 110         <p>As a consequence, <strong>they don't provide you with a
 111         strong way of checking the ISO image <span
 112         class="definition">[[!wikipedia Authentication
 113         desc="authenticity"]]</span> and making sure you downloaded a genuine
 114         Tails.</strong> In a dedicated section, we will propose you some more advanced
 115         techniques to <a href="#authenticity-check">check the authenticity of
 116         the ISO image</a>.</p>
 117         </div>
 118
 119         <p><strong>All Tails ISO image are cryptographically signed by our
 120         OpenPGP key.</strong>
 121         OpenPGP is a standard for data encryption that provides cryptographic
 122         privacy and authentication through the use of keys owned by its users.
 123         Checking this signature is the recommended way of checking the ISO image
 124         integrity.</p>
 125
 126         <p>If you already know how to use an OpenPGP key you can download it
 127         straight away:</p>
 128
 129         [[!inline pages="lib/download_tails_signing_key" raw="yes"]]
 130
 131         <p>Otherwise, read our instructions to check the ISO image integrity:</p>
 132         <ul>
 133           <li>
 134           [[!toggle id="verify_the_iso_image_using_gnome"
 135           text="Using Linux with Gnome: Ubuntu, Debian, Tails, etc."]]
 136           </li>
 137           <li>
 138           [[!toggle id="verify_the_iso_image_using_the_command_line"
 139           text="Using Linux with the command line"]]
 140           </li>
 141           <li>
 142           [[!toggle id="verify_the_iso_image_using_other_operating_systems"
 143           text="Using other operating systems"]]
 144           </li>
 145         </ul>
 146
 147         [[!toggleable id="verify_the_iso_image_using_gnome" text="""
 148         <span class="hide">[[!toggle id="verify_the_iso_image_using_gnome" text=""]]</span>
 149
 150         <h2>Using Linux with Gnome: Ubuntu, Debian, Tails, Fedora, etc.</h2>
 151
 152         [[!inline pages="doc/get/verify_the_iso_image_using_gnome" raw="yes"]]
 153
 154         """]]
 155
 156         [[!toggleable id="verify_the_iso_image_using_the_command_line" text="""
 157         <span class="hide">[[!toggle id="verify_the_iso_image_using_the_command_line" text=""]]</span>
 158
 159         <h2>Using Linux with the command line</h2>
 160
 161         [[!inline pages="doc/get/verify_the_iso_image_using_the_command_line" raw="yes"]]
 162
 163         """]]
 164
 165         [[!toggleable id="verify_the_iso_image_using_other_operating_systems" text="""
 166         <span class="hide">[[!toggle id="verify_the_iso_image_using_other_operating_systems" text=""]]</span>
 167
 168         <h2>Using other operating systems</h2>
 169
 170         [[!inline pages="doc/get/verify_the_iso_image_using_other_operating_systems" raw="yes"]]
 171
 172         """]]
 173
 174         <h2><a name="authenticity-check"></a>So how can I check better the ISO
 175         image authenticity?</h2>
 176
 177         <p>But the Tails signing key that you downloaded from this website could
 178         be a fake one if you were victim of a [[man-in-the-middle
 179         attack|doc/about/warning#man-in-the-middle]].</p>
 180
 181         <p>Finding a way of trusting better Tails signing key would allow you to
 182         authenticate better the ISO image you downloaded. The following page
 183         will give you hints on how to increase the trust you can put in the
 184         Tails signing key you downloaded:</p>
 185
 186         <ul>
 187           <li>[[Trusting Tails signing key|doc/get/trusting_tails_signing_key]]</li>
 188         </ul>
 189
 190         <!-- <h2>FIXME: What to do if the image is bad?</h2> -->
 191
 192 </div> <!-- #verify -->
 193
 194 <div id="media">
 195
 196         <h1 class="bullet-number-four">Burn a DVD or install onto a USB stick</h1>
 197
 198         <h2>Burning a DVD</h2>
 199         <ul>
 200           <li>DVDs are read-only so your Tails can't be altered by a virus or an
 201           attacker.</li>
 202           <li>DVDs are cheap but you will need to burn a new DVD each time you
 203           will update your version of Tails.</li>
 204           <li>You could also use a DVD-RW but those are not read-only.</li>
 205         </ul>
 206
 207         <p>For detailed instructions on how to burn an ISO image under Linux,
 208         Windows or Mac OS X you can consult <a
 209         href="https://help.ubuntu.com/community/BurningIsoHowto">the
 210         corresponding Ubuntu documentation</a>: just replace the Ubuntu ISO
 211         image by the Tails ISO image you downloaded and ignore the part on
 212         verifying the data integrity since you've already done that.</p>
 213
 214         <h2>Installing onto a USB stick</h2>
 215
 216         <p><strong>The content of the USB stick will be lost in the
 217         operation.</strong></p>
 218
 219         <ul>
 220           <li>An attacker with physical access to your USB stick or through a
 221           virus could alter your Tails.</li>
 222           <li>USB sticks can be reused across different versions of Tails.</li>
 223           <li>You can store documents in the space left on the USB stick and
 224           use persistence.</li>
 225           <li>USB sticks are smaller to fit in your pocket.</li>
 226           <li>Older computers might not be able to start from a USB stick.</li>
 227           <li>This technique also works for <span
 228           class="definition">[[!wikipedia SD_card desc="SD cards"]]</span>. Some
 229           SD cards have a read-only switch that can prevent your Tails from
 230           being altered. But be aware that this protection is most probably not
 231           ensured by the SD card itself: do not rely on untrusted computers to
 232           respect this feature.</li>
 233         </ul>
 234
 235         <p>[[See the corresponding
 236         documentation.|doc/first_steps/usb_installation]]</p>
 237
 238 </div> <!-- #support -->
 239
 240 <div id="stay_tuned">
 241
 242         <h1 class="bullet-number-five">Stay tuned</h1>
 243
 244         <p>
 245         <strong>It's very important to keep your version of Tails up-to-date, otherwise
 246         your system will be vulnerable to numerous security holes.</strong> The
 247         development team is doing its best to release new versions fixing known
 248         security holes on a regular basis.
 249         </p>
 250
 251         <p>New versions are announced on our <a
 252         href='https://mailman.boum.org/listinfo/amnesia-news'>news
 253         mailing-list</a>. Drop your email address into this box, then hit the
 254         button to subscribe:
 255
 256         <form method="POST" action="https://mailman.boum.org/subscribe/amnesia-news">
 257                 <input class="text" name="email" value=""/>
 258                 <input class="button" type="submit" value="Subscribe"/>
 259                 to the news mailing-list.
 260         </form>
 261         </p>
 262
 263         <p>There also are <a href='/torrents/rss/index.rss'>RSS</a> and
 264         <a href='/torrents/rss/index.atom'>Atom</a> feeds that announce new
 265         available BitTorrent files.</p>
 266
 267         <p>Refer to our [[security announcements|/security]] feed for more
 268         detailed information about the security holes affecting Tails.
 269         Furthermore you will be automatically notified of the security holes
 270         affecting the version you are using at the startup of a new Tails
 271         session.</p>
 272
 273         <p>Since Tails is based on Debian, it takes advantage of all the
 274         work done by the Debian security team. As quoted from <a
 275         href="http://security.debian.org/">(http://security.debian.org/)</a>:</p>
 276
 277         <blockquote>Debian takes security very seriously. We handle all
 278         security problems brought to our attention and ensure that they are
 279         corrected within a reasonable timeframe. Many advisories are coordinated
 280         with other free software vendors and are published the same day a
 281         vulnerability is made public and we also have a Security Audit team that
 282         reviews the archive looking for new or unfixed security bugs.
 283         </blockquote>
 284
 285         <blockquote>Experience has shown that "security through obscurity" does
 286         not work. Public disclosure allows for more rapid and better solutions
 287         to security problems. In that vein, this page addresses Debian's status
 288         with respect to various known security holes, which could potentially
 289         affect Debian.</blockquote>
 290
 291 </div> <!-- #stay_tuned-->
 292
 293 <div id="start">
 294
 295         <h1 class="bullet-number-six">Start Tails!</h1>
 296
 297         <p>Now that you have a Tails DVD or USB stick you can shutdown your
 298         computer and start using Tails without altering your existing operating
 299         system.</p>
 300
 301         <p><strong>If you're using a DVD:</strong> Put the Tails DVD into the
 302         CD/DVD-drive and restart the computer. You should see a welcome screen
 303         prompting you to choose your language.</p>
 304
 305         <p>If you don't get this menu, you can consult the Ubuntu documentation
 306         about <a href="https://help.ubuntu.com/community/BootFromCD">booting
 307         from the CD</a> for more information, especially the part on the <a
 308         href="https://help.ubuntu.com/community/BootFromCD#BIOS%20is%20not%20set%20to%20boot%20from%20CD%20or%20DVD%20drive">
 309         BIOS settings</a>.</p>
 310
 311         <p><strong>If you're using a USB stick:</strong> Shutdown the computer,
 312         plug your USB stick and start the computer. You should see a welcome
 313         screen prompting you to choose your language.</p>
 314
 315         <p>If your computer does not automatically do so, you might need to edit
 316         the BIOS settings. Restart your computer, and watch for a message
 317         telling you which key to press to enter the BIOS setup. It will usually
 318         be one of F1, F2, DEL, ESC or F10. Press this key while your computer is
 319         booting to edit your BIOS settings. You need to edit the Boot Order.
 320         Depending on your computer you should see an entry for 'removable drive'
 321         or 'USB media'. Move this to the top of the list to force the computer
 322         to attempt to boot from USB before booting from the hard disk. Save your
 323         changes and continue.</p>
 324
 325         <p>For more detailed instruction on how to boot from USB you can read <a
 326         href="http://pcsupport.about.com/od/tipstricks/ht/bootusbflash.htm">About.com:
 327         How To Boot your Computer from a Bootable USB Device</a></p>
 328
 329         <p>If you have problems accessing the BIOS, try to read <a
 330         href="http://www.pendrivelinux.com/how-to-access-bios/">pendrivelinux.com:
 331         How to Access BIOS</a></p>
 332
 333 </div><!-- #boot" -->
 334 </div> <!-- #download -->
 335