blog/archive/2013/10/index.html

   1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
   2           "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
   3 <html xmlns="http://www.w3.org/1999/xhtml" dir="ltr">
   4   <head>
   5     <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
   6     <title>Petter Reinholdtsen: entries from October 2013</title>
   7     <link rel="stylesheet" type="text/css" media="screen" href="http://people.skolelinux.org/pere/blog/style.css" />
   8     <link rel="stylesheet" type="text/css" media="screen" href="http://people.skolelinux.org/pere/blog/vim.css" />
   9     <link rel="alternate" title="RSS Feed" href="10.rss" type="application/rss+xml" />
  10   </head>
  11   <body>
  12     <!-- XML FEED -->
  13     <div class="title">
  14  <h1>
  15      <a href="http://people.skolelinux.org/pere/blog/">Petter Reinholdtsen</a>
  16
  17  </h1>
  18
  19 </div>
  20
  21
  22     <h3>Entries from October 2013.</h3>
  23
  24     <div class="entry">
  25       <div class="title">
  26         <a href="http://people.skolelinux.org/pere/blog/Oslo_community_mesh_network___with_NUUG_and_Hackeriet_at_Hausmania.html">Oslo community mesh network - with NUUG and Hackeriet at Hausmania</a>
  27       </div>
  28       <div class="date">
  29         11th October 2013
  30       </div>
  31       <div class="body">
  32         <p>Wireless mesh networks are self organising and self healing
  33 networks that can be used to connect computers across small and large
  34 areas, depending on the radio technology used.  Normal wifi equipment
  35 can be used to create home made radio networks, and there are several
  36 successful examples like
  37 <a href="http://www.freifunk.net/">Freifunk</a> and
  38 <a href="http://www.awmn.net/">Athens Wireless Metropolitan Network</a>
  39 (see
  40 <a href="http://en.wikipedia.org/wiki/List_of_wireless_community_networks_by_region#Greece">wikipedia
  41 for a large list</a>) around the globe.  To give you an idea how it
  42 work, check out the nice overview of the Kiel Freifunk community which
  43 can be seen from their
  44 <a href="http://freifunk.in-kiel.de/ffmap/nodes.html">dynamically
  45 updated node graph and map</a>, where one can see how the mesh nodes
  46 automatically handle routing and recover from nodes disappearing.
  47 There is also a small community mesh network group in Oslo, Norway,
  48 and that is the main topic of this blog post.</p>
  49
  50 <p>I've wanted to check out mesh networks for a while now, and hoped
  51 to do it as part of my involvement with the <a
  52 href="http://www.nuug.no/">NUUG member organisation</a> community, and
  53 my recent involvement in
  54 <a href="https://wiki.debian.org/FreedomBox">the Freedombox project</a>
  55 finally lead me to give mesh networks some priority, as I suspect a
  56 Freedombox should use mesh networks to connect neighbours and family
  57 when possible, given that most communication between people are
  58 between those nearby (as shown for example by research on Facebook
  59 communication patterns).  It also allow people to communicate without
  60 any central hub to tap into for those that want to listen in on the
  61 private communication of citizens, which have become more and more
  62 important over the years.</p>
  63
  64 <p>So far I have only been able to find one group of people in Oslo
  65 working on community mesh networks, over at the hack space
  66 <a href="http://hackeriet.no/">Hackeriet</a> at Husmania.  They seem to
  67 have started with some Freifunk based effort using OLSR, called
  68 <a href="http://oslo.freifunk.net/index.php?title=Main_Page">the Oslo
  69 Freifunk project</a>, but that effort is now dead and the people
  70 behind it have moved on to a batman-adv based system called
  71 <a href="http://meshfx.org/trac">meshfx</a>.  Unfortunately the wiki
  72 site for the Oslo Freifunk project is no longer possible to update to
  73 reflect this fact, so the old project page can't be updated to point to
  74 the new project.  A while back, the people at Hackeriet invited people
  75 from the Freifunk community to Oslo to talk about mesh networks.  I
  76 came across this video where Hans Jørgen Lysglimt interview the
  77 speakers about this talk (from
  78 <a href="https://www.youtube.com/watch?v=N2Kd7CLkhSY">youtube</a>:</p>
  79
  80
  81 <p><iframe width="420" height="315" src="https://www.youtube.com/embed/N2Kd7CLkhSY" frameborder="0" allowfullscreen></iframe></p>
  82
  83 <p>I mentioned OLSR and batman-adv, which are mesh routing protocols.
  84 There are heaps of different protocols, and I am still struggling to
  85 figure out which one would be "best" for some definitions of best, but
  86 given that the community mesh group in Oslo is so small, I believe it
  87 is best to hook up with the existing one instead of trying to create a
  88 completely different setup, and thus this have decided to focus on
  89 batman-adv for now.  It sure help me to  know that the very cool
  90 <a href="http://www.servalproject.org/">Serval project in Australia</a>
  91 is using batman-adv as their meshing technology when it create a self
  92 organizing and self healing telephony system for disaster areas and
  93 less industrialized communities.  Check out this cool video presenting
  94 that project (from
  95 <a href="https://www.youtube.com/watch?v=30qNfzJCQOA">youtube</a>:</p>
  96
  97 <p><iframe width="560" height="315" src="https://www.youtube.com/embed/30qNfzJCQOA" frameborder="0" allowfullscreen></iframe></p>
  98
  99 <p>According to the wikipedia page on
 100 <a href="http://en.wikipedia.org/wiki/Wireless_mesh_network">Wireless
 101 mesh network</a> there are around 70 competing schemes for routing
 102 packets across mesh networks, and OLSR, B.A.T.M.A.N. and
 103 B.A.T.M.A.N. advanced are protocols used by several free software
 104 based community mesh networks.</p>
 105
 106 </p>The batman-adv protocol is a bit special, as it provide layer 2
 107 (as in ethernet ) routing, allowing ipv4 and ipv6 to work on the same
 108 network.  One way to think about it is that it provide a mesh based
 109 vlan you can bridge to or handle like any other vlan connected to your
 110 computer.  The required drivers are already in the Linux kernel at
 111 least since Debian Wheezy, and it is fairly easy to set up.  A
 112 <a href="http://www.open-mesh.org/projects/batman-adv/wiki/Quick-start-guide">good
 113 introduction</a> is available from the Open Mesh project.  These are
 114 the key settings needed to join the Oslo meshfx network:</p>
 115
 116 <table>
 117 <tr><th>Setting</th><th>Value</th></tr>
 118 <tr><td>Protocol / kernel module</td><td>batman-adv</td></tr>
 119 <tr><td>ESSID</td><td>meshfx@hackeriet</td></tr>
 120 <td>Channel / Frequency</td><td>11 / 2462</td></tr>
 121 <td>Cell ID</td><td>02:BA:00:00:00:01</td>
 122 </table>
 123
 124 <p>The reason for setting ad-hoc wifi Cell ID is to work around bugs
 125 in firmware used in wifi card and wifi drivers.  (See a nice post from
 126 VillageTelco about
 127 "<a href="http://tiebing.blogspot.no/2009/12/ad-hoc-cell-splitting-re-post-original.html">Information
 128 about cell-id splitting, stuck beacons, and failed IBSS merges!</a>
 129 for details.)  When these settings are activated and you have some
 130 other mesh node nearby, your computer will be connected to the mesh
 131 network and can communicate with any mesh node that is connected to
 132 any of the nodes in your network of nodes. :)</p>
 133
 134 <p>My initial plan was to reuse my old Linksys WRT54GL as a mesh node,
 135 but that seem to be very hard, as I have not been able to locate a
 136 firmware supporting batman-adv.  If anyone know how to use that old
 137 wifi access point with batman-adv these days, please let me know.</p>
 138
 139 <p>If you find this project interesting and want to join, please join
 140 us on IRC, either channel
 141 <a href="irc://irc.freenode.net/#oslohackerspace">#oslohackerspace</a>
 142 or <a href="irc://irc.freenode.net/#nuug">#nuug</a> on
 143 irc.freenode.net.</p>
 144
 145 <p>While investigating mesh networks in Oslo, I came across an old
 146 research paper from the university of Stavanger and Telenor Research
 147 and Innovation called
 148 <a href="http://folk.uio.no/paalee/publications/netrel-egeland-iswcs-2008.pdf">The
 149 reliability of wireless backhaul mesh networks</a> and elsewhere
 150 learned that Telenor have been experimenting with mesh networks at
 151 Grünerløkka in Oslo.  So mesh networks are also interesting for
 152 commercial companies, even though Telenor discovered that it was hard
 153 to figure out a good business plan for mesh networking and as far as I
 154 know have closed down the experiment.  Perhaps Telenor or others would
 155 be interested in a cooperation?</p>
 156
 157       </div>
 158       <div class="tags">
 159
 160
 161         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>.
 162
 163
 164       </div>
 165     </div>
 166     <div class="padding"></div>
 167
 168     <div class="entry">
 169       <div class="title">
 170         <a href="http://people.skolelinux.org/pere/blog/Skolelinux___Debian_Edu_7_1_install_and_overview_video_from_Marcelo_Salvador.html">Skolelinux / Debian Edu 7.1 install and overview video from Marcelo Salvador</a>
 171       </div>
 172       <div class="date">
 173          8th October 2013
 174       </div>
 175       <div class="body">
 176         <p>The other day I was pleased and surprised to discover that Marcelo
 177 Salvador had published a
 178 <a href="https://www.youtube.com/watch?v=w-GgpdqgLFc">video on
 179 Youtube</a> showing how to install the standalone Debian Edu /
 180 Skolelinux profile.  This is the profile intended for use at home or
 181 on laptops that should not be integrated into the provided network
 182 services (no central home directory, no Kerberos / LDAP directory etc,
 183 in other word a single user machine).  The result is 11 minutes long,
 184 and show some user applications (seem to be rather randomly picked).
 185 Missed a few of my favorites like celestia, planets and chromium
 186 showing the <a href="http://www.zygotebody.com/">Zygote Body 3D model
 187 of the human body</a>, but I guess he did not know about those or find
 188 other programs more interesting. :) And the video do not show the
 189 advantages I believe is one of the most valuable featuers in Debian
 190 Edu, its central school server making it possible to run hundreds of
 191 computers without hard drives by installing one central
 192 <a href="http://www.ltsp.org/">LTSP server</a>.</p>
 193
 194 <p>Anyway, check out the video, embedded below and linked to above:</p>
 195
 196 <iframe width="420" height="315" src="http://www.youtube.com/embed/w-GgpdqgLFc" frameborder="0" allowfullscreen></iframe>
 197
 198 <p>Are there other nice videos demonstrating Skolelinux?  Please let
 199 me know. :)</p>
 200
 201       </div>
 202       <div class="tags">
 203
 204
 205         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>.
 206
 207
 208       </div>
 209     </div>
 210     <div class="padding"></div>
 211
 212     <p style="text-align: right;"><a href="10.rss"><img src="http://people.skolelinux.org/pere/blog/xml.gif" alt="RSS Feed" width="36" height="14" /></a></p>
 213     <div id="sidebar">
 214
 215
 216
 217 <h2>Archive</h2>
 218 <ul>
 219
 220 <li>2013
 221 <ul>
 222
 223 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/01/">January (11)</a></li>
 224
 225 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/02/">February (9)</a></li>
 226
 227 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/03/">March (9)</a></li>
 228
 229 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/04/">April (6)</a></li>
 230
 231 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/05/">May (9)</a></li>
 232
 233 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/06/">June (10)</a></li>
 234
 235 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/07/">July (7)</a></li>
 236
 237 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/08/">August (3)</a></li>
 238
 239 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/09/">September (5)</a></li>
 240
 241 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/10/">October (2)</a></li>
 242
 243 </ul></li>
 244
 245 <li>2012
 246 <ul>
 247
 248 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/01/">January (7)</a></li>
 249
 250 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/02/">February (10)</a></li>
 251
 252 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/03/">March (17)</a></li>
 253
 254 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/04/">April (12)</a></li>
 255
 256 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/05/">May (12)</a></li>
 257
 258 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/06/">June (20)</a></li>
 259
 260 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/07/">July (17)</a></li>
 261
 262 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/08/">August (6)</a></li>
 263
 264 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/09/">September (9)</a></li>
 265
 266 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/10/">October (17)</a></li>
 267
 268 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/11/">November (10)</a></li>
 269
 270 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/12/">December (7)</a></li>
 271
 272 </ul></li>
 273
 274 <li>2011
 275 <ul>
 276
 277 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/01/">January (16)</a></li>
 278
 279 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/02/">February (6)</a></li>
 280
 281 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/03/">March (6)</a></li>
 282
 283 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/04/">April (7)</a></li>
 284
 285 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/05/">May (3)</a></li>
 286
 287 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/06/">June (2)</a></li>
 288
 289 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/07/">July (7)</a></li>
 290
 291 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/08/">August (6)</a></li>
 292
 293 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/09/">September (4)</a></li>
 294
 295 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/10/">October (2)</a></li>
 296
 297 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/11/">November (3)</a></li>
 298
 299 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/12/">December (1)</a></li>
 300
 301 </ul></li>
 302
 303 <li>2010
 304 <ul>
 305
 306 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/01/">January (2)</a></li>
 307
 308 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/02/">February (1)</a></li>
 309
 310 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/03/">March (3)</a></li>
 311
 312 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/04/">April (3)</a></li>
 313
 314 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/05/">May (9)</a></li>
 315
 316 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/06/">June (14)</a></li>
 317
 318 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/07/">July (12)</a></li>
 319
 320 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/08/">August (13)</a></li>
 321
 322 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/09/">September (7)</a></li>
 323
 324 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/10/">October (9)</a></li>
 325
 326 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/11/">November (13)</a></li>
 327
 328 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/12/">December (12)</a></li>
 329
 330 </ul></li>
 331
 332 <li>2009
 333 <ul>
 334
 335 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/01/">January (8)</a></li>
 336
 337 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/02/">February (8)</a></li>
 338
 339 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/03/">March (12)</a></li>
 340
 341 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/04/">April (10)</a></li>
 342
 343 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/05/">May (9)</a></li>
 344
 345 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/06/">June (3)</a></li>
 346
 347 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/07/">July (4)</a></li>
 348
 349 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/08/">August (3)</a></li>
 350
 351 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/09/">September (1)</a></li>
 352
 353 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/10/">October (2)</a></li>
 354
 355 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/11/">November (3)</a></li>
 356
 357 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/12/">December (3)</a></li>
 358
 359 </ul></li>
 360
 361 <li>2008
 362 <ul>
 363
 364 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/11/">November (5)</a></li>
 365
 366 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/12/">December (7)</a></li>
 367
 368 </ul></li>
 369
 370 </ul>
 371
 372
 373
 374 <h2>Tags</h2>
 375 <ul>
 376
 377  <li><a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (13)</a></li>
 378
 379  <li><a href="http://people.skolelinux.org/pere/blog/tags/amiga">amiga (1)</a></li>
 380
 381  <li><a href="http://people.skolelinux.org/pere/blog/tags/aros">aros (1)</a></li>
 382
 383  <li><a href="http://people.skolelinux.org/pere/blog/tags/bankid">bankid (4)</a></li>
 384
 385  <li><a href="http://people.skolelinux.org/pere/blog/tags/bitcoin">bitcoin (7)</a></li>
 386
 387  <li><a href="http://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem (12)</a></li>
 388
 389  <li><a href="http://people.skolelinux.org/pere/blog/tags/bsa">bsa (2)</a></li>
 390
 391  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian">debian (86)</a></li>
 392
 393  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (142)</a></li>
 394
 395  <li><a href="http://people.skolelinux.org/pere/blog/tags/digistan">digistan (10)</a></li>
 396
 397  <li><a href="http://people.skolelinux.org/pere/blog/tags/docbook">docbook (10)</a></li>
 398
 399  <li><a href="http://people.skolelinux.org/pere/blog/tags/drivstoffpriser">drivstoffpriser (4)</a></li>
 400
 401  <li><a href="http://people.skolelinux.org/pere/blog/tags/english">english (219)</a></li>
 402
 403  <li><a href="http://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (21)</a></li>
 404
 405  <li><a href="http://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (12)</a></li>
 406
 407  <li><a href="http://people.skolelinux.org/pere/blog/tags/freeculture">freeculture (12)</a></li>
 408
 409  <li><a href="http://people.skolelinux.org/pere/blog/tags/freedombox">freedombox (2)</a></li>
 410
 411  <li><a href="http://people.skolelinux.org/pere/blog/tags/frikanalen">frikanalen (11)</a></li>
 412
 413  <li><a href="http://people.skolelinux.org/pere/blog/tags/intervju">intervju (37)</a></li>
 414
 415  <li><a href="http://people.skolelinux.org/pere/blog/tags/isenkram">isenkram (7)</a></li>
 416
 417  <li><a href="http://people.skolelinux.org/pere/blog/tags/kart">kart (18)</a></li>
 418
 419  <li><a href="http://people.skolelinux.org/pere/blog/tags/ldap">ldap (8)</a></li>
 420
 421  <li><a href="http://people.skolelinux.org/pere/blog/tags/lenker">lenker (6)</a></li>
 422
 423  <li><a href="http://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (1)</a></li>
 424
 425  <li><a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (25)</a></li>
 426
 427  <li><a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk (235)</a></li>
 428
 429  <li><a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug (154)</a></li>
 430
 431  <li><a href="http://people.skolelinux.org/pere/blog/tags/offentlig innsyn">offentlig innsyn (8)</a></li>
 432
 433  <li><a href="http://people.skolelinux.org/pere/blog/tags/open311">open311 (2)</a></li>
 434
 435  <li><a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (44)</a></li>
 436
 437  <li><a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern (66)</a></li>
 438
 439  <li><a href="http://people.skolelinux.org/pere/blog/tags/raid">raid (1)</a></li>
 440
 441  <li><a href="http://people.skolelinux.org/pere/blog/tags/reprap">reprap (11)</a></li>
 442
 443  <li><a href="http://people.skolelinux.org/pere/blog/tags/rfid">rfid (2)</a></li>
 444
 445  <li><a href="http://people.skolelinux.org/pere/blog/tags/robot">robot (7)</a></li>
 446
 447  <li><a href="http://people.skolelinux.org/pere/blog/tags/rss">rss (1)</a></li>
 448
 449  <li><a href="http://people.skolelinux.org/pere/blog/tags/ruter">ruter (4)</a></li>
 450
 451  <li><a href="http://people.skolelinux.org/pere/blog/tags/scraperwiki">scraperwiki (2)</a></li>
 452
 453  <li><a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (31)</a></li>
 454
 455  <li><a href="http://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (4)</a></li>
 456
 457  <li><a href="http://people.skolelinux.org/pere/blog/tags/skepsis">skepsis (4)</a></li>
 458
 459  <li><a href="http://people.skolelinux.org/pere/blog/tags/standard">standard (43)</a></li>
 460
 461  <li><a href="http://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (3)</a></li>
 462
 463  <li><a href="http://people.skolelinux.org/pere/blog/tags/stortinget">stortinget (8)</a></li>
 464
 465  <li><a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance (18)</a></li>
 466
 467  <li><a href="http://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin (1)</a></li>
 468
 469  <li><a href="http://people.skolelinux.org/pere/blog/tags/valg">valg (8)</a></li>
 470
 471  <li><a href="http://people.skolelinux.org/pere/blog/tags/video">video (39)</a></li>
 472
 473  <li><a href="http://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (4)</a></li>
 474
 475  <li><a href="http://people.skolelinux.org/pere/blog/tags/web">web (28)</a></li>
 476
 477 </ul>
 478
 479
 480     </div>
 481     <p style="text-align: right">
 482  Created by <a href="http://steve.org.uk/Software/chronicle">Chronicle v4.6</a>
 483 </p>
 484
 485   </body>
 486 </html>