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  13  <h1>
  14      <a href="http://people.skolelinux.org/pere/blog/">Petter Reinholdtsen</a>
  15
  16  </h1>
  17
  18 </div>
  19
  20
  21
  22     <div class="entry">
  23       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Browser_plugin_for_SPICE__spice_xpi__uploaded_to_Debian.html">Browser plugin for SPICE (spice-xpi) uploaded to Debian</a></div>
  24       <div class="date"> 1st November 2013</div>
  25       <div class="body"><p><a href="http://www.spice-space.org/">The SPICE protocol</a> for
  26 remote display access is the preferred solution with oVirt and RedHat
  27 Enterprise Virtualization, and I was sad to discover the other day
  28 that the browser plugin needed to use these systems seamlessly was
  29 missing in Debian.  The <a href="http://bugs.debian.org/668284">request
  30 for a package</a> was from 2012-04-10 with no progress since
  31 2013-04-01, so I decided to wrap up a package based on the great work
  32 from Cajus Pollmeier and put it in a collab-maint maintained git
  33 repository to get a package I could use.  I would very much like
  34 others to help me maintain the package (or just take over, I do not
  35 mind), but as no-one had volunteered so far, I just uploaded it to
  36 NEW.  I hope it will be available in Debian in a few days.</p>
  37
  38 <p>The source is now available from
  39 <a href="http://anonscm.debian.org/gitweb/?p=collab-maint/spice-xpi.git;a=summary">http://anonscm.debian.org/gitweb/?p=collab-maint/spice-xpi.git;a=summary</a>.</p>
  40 </div>
  41       <div class="tags">
  42
  43
  44         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
  45
  46
  47       </div>
  48     </div>
  49     <div class="padding"></div>
  50
  51     <div class="entry">
  52       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Teaching_vmdebootstrap_to_create_Raspberry_Pi_SD_card_images.html">Teaching vmdebootstrap to create Raspberry Pi SD card images</a></div>
  53       <div class="date">27th October 2013</div>
  54       <div class="body"><p>The
  55 <a href="http://packages.qa.debian.org/v/vmdebootstrap.html">vmdebootstrap</a>
  56 program is a a very nice system to create virtual machine images.  It
  57 create a image file, add a partition table, mount it and run
  58 debootstrap in the mounted directory to create a Debian system on a
  59 stick.  Yesterday, I decided to try to teach it how to make images for
  60 <a href="https://wiki.debian.org/RaspberryPi">Raspberry Pi</a>, as part
  61 of a plan to simplify the build system for
  62 <a href="https://wiki.debian.org/FreedomBox">the FreedomBox
  63 project</a>.  The FreedomBox project already uses vmdebootstrap for
  64 the virtualbox images, but its current build system made multistrap
  65 based system for Dreamplug images, and it is lacking support for
  66 Raspberry Pi.</p>
  67
  68 <p>Armed with the knowledge on how to build "foreign" (aka non-native
  69 architecture) chroots for Raspberry Pi, I dived into the vmdebootstrap
  70 code and adjusted it to be able to build armel images on my amd64
  71 Debian laptop.  I ended up giving vmdebootstrap five new options,
  72 allowing me to replicate the image creation process I use to make
  73 <a href="http://people.skolelinux.org/pere/blog/A_Raspberry_Pi_based_batman_adv_Mesh_network_node.html">Debian
  74 Jessie based mesh node images for the Raspberry Pi</a>.  First, the
  75 <tt>--foreign /path/to/binfm_handler</tt> option tell vmdebootstrap to
  76 call debootstrap with --foreign and to copy the handler into the
  77 generated chroot before running the second stage.  This allow
  78 vmdebootstrap to create armel images on an amd64 host.  Next I added
  79 two new options <tt>--bootsize size</tt> and <tt>--boottype
  80 fstype</tt> to teach it to create a separate /boot/ partition with the
  81 given file system type, allowing me to create an image with a vfat
  82 partition for the /boot/ stuff.  I also added a <tt>--variant
  83 variant</tt> option to allow me to create smaller images without the
  84 Debian base system packages installed.  Finally, I added an option
  85 <tt>--no-extlinux</tt> to tell vmdebootstrap to not install extlinux
  86 as a boot loader.  It is not needed on the Raspberry Pi and probably
  87 most other non-x86 architectures.  The changes were accepted by the
  88 upstream author of vmdebootstrap yesterday and today, and is now
  89 available from
  90 <a href="http://git.liw.fi/cgi-bin/cgit/cgit.cgi/vmdebootstrap/">the
  91 upstream project page</a>.</p>
  92
  93 <p>To use it to build a Raspberry Pi image using Debian Jessie, first
  94 create a small script (the customize script) to add the non-free
  95 binary blob needed to boot the Raspberry Pi and the APT source
  96 list:</p>
  97
  98 <p><pre>
  99 #!/bin/sh
 100 set -e # Exit on first error
 101 rootdir="$1"
 102 cd "$rootdir"
 103 cat &lt;&lt;EOF > etc/apt/sources.list
 104 deb http://http.debian.net/debian/ jessie main contrib non-free
 105 EOF
 106 # Install non-free binary blob needed to boot Raspberry Pi.  This
 107 # install a kernel somewhere too.
 108 wget https://raw.github.com/Hexxeh/rpi-update/master/rpi-update \
 109     -O $rootdir/usr/bin/rpi-update
 110 chmod a+x $rootdir/usr/bin/rpi-update
 111 mkdir -p $rootdir/lib/modules
 112 touch $rootdir/boot/start.elf
 113 chroot $rootdir rpi-update
 114 </pre></p>
 115
 116 <p>Next, fetch the latest vmdebootstrap script and call it like this
 117 to build the image:</p>
 118
 119 <pre>
 120 sudo ./vmdebootstrap \
 121     --variant minbase \
 122     --arch armel \
 123     --distribution jessie \
 124     --mirror http://http.debian.net/debian \
 125     --image test.img \
 126     --size 600M \
 127     --bootsize 64M \
 128     --boottype vfat \
 129     --log-level debug \
 130     --verbose \
 131     --no-kernel \
 132     --no-extlinux \
 133     --root-password raspberry \
 134     --hostname raspberrypi \
 135     --foreign /usr/bin/qemu-arm-static \
 136     --customize `pwd`/customize \
 137     --package netbase \
 138     --package git-core \
 139     --package binutils \
 140     --package ca-certificates \
 141     --package wget \
 142     --package kmod
 143 </pre></p>
 144
 145 <p>The list of packages being installed are the ones needed by
 146 rpi-update to make the image bootable on the Raspberry Pi, with the
 147 exception of netbase, which is needed by debootstrap to find
 148 /etc/hosts with the minbase variant.  I really wish there was a way to
 149 set up an Raspberry Pi using only packages in the Debian archive, but
 150 that is not possible as far as I know, because it boots from the GPU
 151 using a non-free binary blob.</p>
 152
 153 <p>The build host need debootstrap, kpartx and qemu-user-static and
 154 probably a few others installed.  I have not checked the complete
 155 build dependency list.</p>
 156
 157 <p>The resulting image will not use the hardware floating point unit
 158 on the Raspberry PI, because the armel architecture in Debian is not
 159 optimized for that use.  So the images created will be a bit slower
 160 than <a href="http://www.raspbian.org/">Raspbian</a> based images.</p>
 161 </div>
 162       <div class="tags">
 163
 164
 165         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/freedombox">freedombox</a>, <a href="http://people.skolelinux.org/pere/blog/tags/mesh network">mesh network</a>.
 166
 167
 168       </div>
 169     </div>
 170     <div class="padding"></div>
 171
 172     <div class="entry">
 173       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Det_er_jo_makta_som_er_mest_s_rbar_ved_massiv_overv_kning_av_Internett.html">Det er jo makta som er mest sårbar ved massiv overvåkning av Internett</a></div>
 174       <div class="date">26th October 2013</div>
 175       <div class="body"><p>De siste måneders eksponering av
 176 <a href="http://www.aftenposten.no/nyheter/uriks/Her-er-Edvard-Snowdens-mest-omtalte-avsloringer-7351734.html">den
 177 totale overvåkningen som foregår i den vestlige verden dokumenterer
 178 hvor sårbare vi er</a>.  Men det slår meg at de som er mest sårbare
 179 for dette, myndighetspersoner på alle nivåer, neppe har innsett at de
 180 selv er de mest interessante personene å lage profiler på, for å kunne
 181 påvirke dem.</p>
 182
 183 <p>For å ta et lite eksempel: Stortingets nettsted,
 184 <a href="http://www.stortinget.no/">www.stortinget.no</a> (og
 185 forsåvidt også
 186 <a href="http://data.stortinget.no/">data.stortinget.no</a>),
 187 inneholder informasjon om det som foregår på Stortinget, og jeg antar
 188 de største brukerne av informasjonen der er representanter og
 189 rådgivere på Stortinget.  Intet overraskende med det.  Det som derimot
 190 er mer skjult er at Stortingets nettsted bruker
 191 <a href="http://en.wikipedia.org/wiki/Google_Analytics">Google
 192 Analytics</a>, hvilket gjør at enhver som besøker nettsidene der også
 193 rapporterer om besøket via Internett-linjer som passerer Sverige,
 194 England og videre til USA.  Det betyr at informasjon om ethvert besøk
 195 på stortingets nettsider kan snappes opp av svensk, britisk og USAs
 196 etterretningsvesen.  De kan dermed holde et øye med hvilke
 197 Stortingssaker stortingsrepresentantene synes er interessante å sjekke
 198 ut, og hvilke sider rådgivere og andre på stortinget synes er
 199 interessant å besøke, når de gjør det og hvilke andre representanter
 200 som sjekker de samme sidene omtrent samtidig.  Stortingets bruk av
 201 Google Analytics gjør det dermed enkelt for utenlands etteretning å
 202 spore representantenes aktivitet og interesse.  Hvis noen av
 203 representantene bruker Google Mail eller noen andre tjenestene som
 204 krever innlogging, så vil det være enda enklere å finne ut nøyaktig
 205 hvilke personer som bruker hvilke nettlesere og dermed knytte
 206 informasjonen opp til enkeltpersoner på Stortinget.</p>
 207
 208 <p>Og jo flere nettsteder som bruker Google Analytics, jo bedre
 209 oversikt over stortingsrepresentantenes lesevaner og interesse blir
 210 tilgjengelig for svensk, britisk og USAs etterretning.  Hva de kan
 211 bruke den informasjonen til overlater jeg til leseren å undres
 212 over.</p>
 213 </div>
 214       <div class="tags">
 215
 216
 217         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern</a>, <a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet</a>, <a href="http://people.skolelinux.org/pere/blog/tags/stortinget">stortinget</a>, <a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance</a>.
 218
 219
 220       </div>
 221     </div>
 222     <div class="padding"></div>
 223
 224     <div class="entry">
 225       <div class="title"><a href="http://people.skolelinux.org/pere/blog/A_Raspberry_Pi_based_batman_adv_Mesh_network_node.html">A Raspberry Pi based batman-adv Mesh network node</a></div>
 226       <div class="date">21st October 2013</div>
 227       <div class="body"><p>The last few days I have been experimenting with
 228 <a href="http://www.open-mesh.org/projects/batman-adv/wiki">the
 229 batman-adv mesh technology</a>.  I want to gain some experience to see
 230 if it will fit <a href="https://wiki.debian.org/FreedomBox">the
 231 Freedombox project</a>, and together with my neighbors try to build a
 232 mesh network around the park where I live.  Batman-adv is a layer 2
 233 mesh system ("ethernet" in other words), where the mesh network appear
 234 as if all the mesh clients are connected to the same switch.</p>
 235
 236 <p>My hardware of choice was the Linksys WRT54GL routers I had lying
 237 around, but I've been unable to get them working with batman-adv.  So
 238 instead, I started playing with a
 239 <a href="http://www.raspberrypi.org/">Raspberry Pi</a>, and tried to
 240 get it working as a mesh node.  My idea is to use it to create a mesh
 241 node which function as a switch port, where everything connected to
 242 the Raspberry Pi ethernet plug is connected (bridged) to the mesh
 243 network.  This allow me to hook a wifi base station like the Linksys
 244 WRT54GL to the mesh by plugging it into a Raspberry Pi, and allow
 245 non-mesh clients to hook up to the mesh.  This in turn is useful for
 246 Android phones using <a href="http://servalproject.org/">the Serval
 247 Project</a> voip client, allowing every one around the playground to
 248 phone and message each other for free.  The reason is that Android
 249 phones do not see ad-hoc wifi networks (they are filtered away from
 250 the GUI view), and can not join the mesh without being rooted.  But if
 251 they are connected using a normal wifi base station, they can talk to
 252 every client on the local network.</p>
 253
 254 <p>To get this working, I've created a debian package
 255 <a href="https://github.com/petterreinholdtsen/meshfx-node">meshfx-node</a>
 256 and a script
 257 <a href="https://github.com/petterreinholdtsen/meshfx-node/blob/master/build-rpi-mesh-node">build-rpi-mesh-node</a>
 258 to create the Raspberry Pi boot image.  I'm using Debian Jessie (and
 259 not Raspbian), to get more control over the packages available.
 260 Unfortunately a huge binary blob need to be inserted into the boot
 261 image to get it booting, but I'll ignore that for now.  Also, as
 262 Debian lack support for the CPU features available in the Raspberry
 263 Pi, the system do not use the hardware floating point unit.  I hope
 264 the routing performance isn't affected by the lack of hardware FPU
 265 support.</p>
 266
 267 <p>To create an image, run the following with a sudo enabled user
 268 after inserting the target SD card into the build machine:</p>
 269
 270 <p><pre>
 271 % wget -O build-rpi-mesh-node \
 272     https://raw.github.com/petterreinholdtsen/meshfx-node/master/build-rpi-mesh-node
 273 % sudo bash -x ./build-rpi-mesh-node > build.log 2>&1
 274 % dd if=/root/rpi/rpi_basic_jessie_$(date +%Y%m%d).img of=/dev/mmcblk0 bs=1M
 275 %
 276 </pre></p>
 277
 278 <p>Booting with the resulting SD card on a Raspberry PI with a USB
 279 wifi card inserted should give you a mesh node.  At least it does for
 280 me with a the wifi card I am using. The default mesh settings are the
 281 ones used by the Oslo mesh project at Hackeriet, as I mentioned in
 282 <a href="http://people.skolelinux.org/pere/blog/Oslo_community_mesh_network___with_NUUG_and_Hackeriet_at_Hausmania.html">an
 283 earlier blog post about this mesh testing</a>.</p>
 284
 285 <p>The mesh node was not horribly expensive either.  I bought
 286 everything over the counter in shops nearby.  If I had ordered online
 287 from the lowest bidder, the price should be significantly lower:</p>
 288
 289 <p><table>
 290
 291 <tr><th>Supplier</th><th>Model</th><th>NOK</th></tr>
 292 <tr><td>Teknikkmagasinet</td><td>Raspberry Pi model B</td><td>349.90</td></tr>
 293 <tr><td>Teknikkmagasinet</td><td>Raspberry Pi type B case</td><td>99.90</td></tr>
 294 <tr><td>Lefdal</td><td>Jensen Air:Link 25150</td><td>295.-</td></tr>
 295 <tr><td>Clas Ohlson</td><td>Kingston 16 GB SD card</td><td>199.-</td></tr>
 296 <tr><td>Total cost</td><td></td><td>943.80</td></tr>
 297
 298 </table></p>
 299
 300 <p>Now my mesh network at home consist of one laptop in the basement
 301 connected to my production network, one Raspberry Pi node on the 1th
 302 floor that can be seen by my neighbor across the park, and one
 303 play-node I use to develop the image building script.  And some times
 304 I hook up my work horse laptop to the mesh to test it.  I look forward
 305 to figuring out what kind of latency the batman-adv setup will give,
 306 and how much packet loss we will experience around the park. :)</p>
 307 </div>
 308       <div class="tags">
 309
 310
 311         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/freedombox">freedombox</a>, <a href="http://people.skolelinux.org/pere/blog/tags/mesh network">mesh network</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>.
 312
 313
 314       </div>
 315     </div>
 316     <div class="padding"></div>
 317
 318     <div class="entry">
 319       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Perl_library_to_control_the_Spykee_robot_moved_to_github.html">Perl library to control the Spykee robot moved to github</a></div>
 320       <div class="date">19th October 2013</div>
 321       <div class="body"><p>Back in 2010, I created a Perl library to talk to
 322 <a href="http://en.wikipedia.org/wiki/Spykee">the Spykee robot</a>
 323 (with two belts, wifi, USB and Linux) and made it available from my
 324 web page.  Today I concluded that it should move to a site that is
 325 easier to use to cooperate with others, and moved it to github.  If
 326 you got a Spykee robot, you might want to check out
 327 <a href="https://github.com/petterreinholdtsen/libspykee-perl">the
 328 libspykee-perl github repository</a>.</p>
 329 </div>
 330       <div class="tags">
 331
 332
 333         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>, <a href="http://people.skolelinux.org/pere/blog/tags/robot">robot</a>.
 334
 335
 336       </div>
 337     </div>
 338     <div class="padding"></div>
 339
 340     <div class="entry">
 341       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Good_causes__Debian_Outreach_Program_for_Women__EFF_documenting_the_spying_and_Open_access_in_Norway.html">Good causes: Debian Outreach Program for Women, EFF documenting the spying and Open access in Norway</a></div>
 342       <div class="date">15th October 2013</div>
 343       <div class="body"><p>The last few days I came across a few good causes that should get
 344 wider attention.  I recommend signing and donating to each one of
 345 these. :)</p>
 346
 347 <p>Via <a href="http://www.debian.org/News/weekly/2013/18/">Debian
 348 Project News for 2013-10-14</a> I came across the Outreach Program for
 349 Women program which is a Google Summer of Code like initiative to get
 350 more women involved in free software.  One debian sponsor has offered
 351 to match <a href="http://debian.ch/opw2013">any donation done to Debian
 352 earmarked</a> for this initiative.  I donated a few minutes ago, and
 353 hope you will to. :)</p>
 354
 355 <p>And the Electronic Frontier Foundation just announced plans to
 356 create <a href="https://supporters.eff.org/donate/nsa-videos">video
 357 documentaries about the excessive spying</a> on every Internet user that
 358 take place these days, and their need to fund the work.  I've already
 359 donated.  Are you next?</p>
 360
 361 <p>For my Norwegian audience, the organisation Studentenes og
 362 Akademikernes Internasjonale Hjelpefond is collecting signatures for a
 363 statement under the heading
 364 <a href="http://saih.no/Bloggers_United/">Bloggers United for Open
 365 Access</a> for those of us asking for more focus on open access in the
 366 Norwegian government.  So far 499 signatures.  I hope you will sign it
 367 too.</p>
 368 </div>
 369       <div class="tags">
 370
 371
 372         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett</a>, <a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance</a>.
 373
 374
 375       </div>
 376     </div>
 377     <div class="padding"></div>
 378
 379     <div class="entry">
 380       <div class="title"><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></div>
 381       <div class="date">11th October 2013</div>
 382       <div class="body"><p>Wireless mesh networks are self organising and self healing
 383 networks that can be used to connect computers across small and large
 384 areas, depending on the radio technology used.  Normal wifi equipment
 385 can be used to create home made radio networks, and there are several
 386 successful examples like
 387 <a href="http://www.freifunk.net/">Freifunk</a> and
 388 <a href="http://www.awmn.net/">Athens Wireless Metropolitan Network</a>
 389 (see
 390 <a href="http://en.wikipedia.org/wiki/List_of_wireless_community_networks_by_region#Greece">wikipedia
 391 for a large list</a>) around the globe.  To give you an idea how it
 392 work, check out the nice overview of the Kiel Freifunk community which
 393 can be seen from their
 394 <a href="http://freifunk.in-kiel.de/ffmap/nodes.html">dynamically
 395 updated node graph and map</a>, where one can see how the mesh nodes
 396 automatically handle routing and recover from nodes disappearing.
 397 There is also a small community mesh network group in Oslo, Norway,
 398 and that is the main topic of this blog post.</p>
 399
 400 <p>I've wanted to check out mesh networks for a while now, and hoped
 401 to do it as part of my involvement with the <a
 402 href="http://www.nuug.no/">NUUG member organisation</a> community, and
 403 my recent involvement in
 404 <a href="https://wiki.debian.org/FreedomBox">the Freedombox project</a>
 405 finally lead me to give mesh networks some priority, as I suspect a
 406 Freedombox should use mesh networks to connect neighbours and family
 407 when possible, given that most communication between people are
 408 between those nearby (as shown for example by research on Facebook
 409 communication patterns).  It also allow people to communicate without
 410 any central hub to tap into for those that want to listen in on the
 411 private communication of citizens, which have become more and more
 412 important over the years.</p>
 413
 414 <p>So far I have only been able to find one group of people in Oslo
 415 working on community mesh networks, over at the hack space
 416 <a href="http://hackeriet.no/">Hackeriet</a> at Husmania.  They seem to
 417 have started with some Freifunk based effort using OLSR, called
 418 <a href="http://oslo.freifunk.net/index.php?title=Main_Page">the Oslo
 419 Freifunk project</a>, but that effort is now dead and the people
 420 behind it have moved on to a batman-adv based system called
 421 <a href="http://meshfx.org/trac">meshfx</a>.  Unfortunately the wiki
 422 site for the Oslo Freifunk project is no longer possible to update to
 423 reflect this fact, so the old project page can't be updated to point to
 424 the new project.  A while back, the people at Hackeriet invited people
 425 from the Freifunk community to Oslo to talk about mesh networks.  I
 426 came across this video where Hans Jørgen Lysglimt interview the
 427 speakers about this talk (from
 428 <a href="https://www.youtube.com/watch?v=N2Kd7CLkhSY">youtube</a>):</p>
 429
 430 <p><iframe width="420" height="315" src="https://www.youtube.com/embed/N2Kd7CLkhSY" frameborder="0" allowfullscreen></iframe></p>
 431
 432 <p>I mentioned OLSR and batman-adv, which are mesh routing protocols.
 433 There are heaps of different protocols, and I am still struggling to
 434 figure out which one would be "best" for some definitions of best, but
 435 given that the community mesh group in Oslo is so small, I believe it
 436 is best to hook up with the existing one instead of trying to create a
 437 completely different setup, and thus I have decided to focus on
 438 batman-adv for now.  It sure help me to  know that the very cool
 439 <a href="http://www.servalproject.org/">Serval project in Australia</a>
 440 is using batman-adv as their meshing technology when it create a self
 441 organizing and self healing telephony system for disaster areas and
 442 less industrialized communities.  Check out this cool video presenting
 443 that project (from
 444 <a href="https://www.youtube.com/watch?v=30qNfzJCQOA">youtube</a>):</p>
 445
 446 <p><iframe width="560" height="315" src="https://www.youtube.com/embed/30qNfzJCQOA" frameborder="0" allowfullscreen></iframe></p>
 447
 448 <p>According to the wikipedia page on
 449 <a href="http://en.wikipedia.org/wiki/Wireless_mesh_network">Wireless
 450 mesh network</a> there are around 70 competing schemes for routing
 451 packets across mesh networks, and OLSR, B.A.T.M.A.N. and
 452 B.A.T.M.A.N. advanced are protocols used by several free software
 453 based community mesh networks.</p>
 454
 455 <p>The batman-adv protocol is a bit special, as it provide layer 2
 456 (as in ethernet ) routing, allowing ipv4 and ipv6 to work on the same
 457 network.  One way to think about it is that it provide a mesh based
 458 vlan you can bridge to or handle like any other vlan connected to your
 459 computer.  The required drivers are already in the Linux kernel at
 460 least since Debian Wheezy, and it is fairly easy to set up.  A
 461 <a href="http://www.open-mesh.org/projects/batman-adv/wiki/Quick-start-guide">good
 462 introduction</a> is available from the Open Mesh project.  These are
 463 the key settings needed to join the Oslo meshfx network:</p>
 464
 465 <p><table>
 466 <tr><th>Setting</th><th>Value</th></tr>
 467 <tr><td>Protocol / kernel module</td><td>batman-adv</td></tr>
 468 <tr><td>ESSID</td><td>meshfx@hackeriet</td></tr>
 469 <td>Channel / Frequency</td><td>11 / 2462</td></tr>
 470 <td>Cell ID</td><td>02:BA:00:00:00:01</td>
 471 </table></p>
 472
 473 <p>The reason for setting ad-hoc wifi Cell ID is to work around bugs
 474 in firmware used in wifi card and wifi drivers.  (See a nice post from
 475 VillageTelco about
 476 "<a href="http://tiebing.blogspot.no/2009/12/ad-hoc-cell-splitting-re-post-original.html">Information
 477 about cell-id splitting, stuck beacons, and failed IBSS merges!</a>
 478 for details.)  When these settings are activated and you have some
 479 other mesh node nearby, your computer will be connected to the mesh
 480 network and can communicate with any mesh node that is connected to
 481 any of the nodes in your network of nodes. :)</p>
 482
 483 <p>My initial plan was to reuse my old Linksys WRT54GL as a mesh node,
 484 but that seem to be very hard, as I have not been able to locate a
 485 firmware supporting batman-adv.  If anyone know how to use that old
 486 wifi access point with batman-adv these days, please let me know.</p>
 487
 488 <p>If you find this project interesting and want to join, please join
 489 us on IRC, either channel
 490 <a href="irc://irc.freenode.net/#oslohackerspace">#oslohackerspace</a>
 491 or <a href="irc://irc.freenode.net/#nuug">#nuug</a> on
 492 irc.freenode.net.</p>
 493
 494 <p>While investigating mesh networks in Oslo, I came across an old
 495 research paper from the university of Stavanger and Telenor Research
 496 and Innovation called
 497 <a href="http://folk.uio.no/paalee/publications/netrel-egeland-iswcs-2008.pdf">The
 498 reliability of wireless backhaul mesh networks</a> and elsewhere
 499 learned that Telenor have been experimenting with mesh networks at
 500 Grünerløkka in Oslo.  So mesh networks are also interesting for
 501 commercial companies, even though Telenor discovered that it was hard
 502 to figure out a good business plan for mesh networking and as far as I
 503 know have closed down the experiment.  Perhaps Telenor or others would
 504 be interested in a cooperation?</p>
 505
 506 <p><strong>Update 2013-10-12</strong>: I was just
 507 <a href="http://lists.alioth.debian.org/pipermail/freedombox-discuss/2013-October/005900.html">told
 508 by the Serval project developers</a> that they no longer use
 509 batman-adv (but are compatible with it), but their own crypto based
 510 mesh system.</p>
 511 </div>
 512       <div class="tags">
 513
 514
 515         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/freedombox">freedombox</a>, <a href="http://people.skolelinux.org/pere/blog/tags/mesh network">mesh network</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>.
 516
 517
 518       </div>
 519     </div>
 520     <div class="padding"></div>
 521
 522     <div class="entry">
 523       <div class="title"><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></div>
 524       <div class="date"> 8th October 2013</div>
 525       <div class="body"><p>The other day I was pleased and surprised to discover that Marcelo
 526 Salvador had published a
 527 <a href="https://www.youtube.com/watch?v=w-GgpdqgLFc">video on
 528 Youtube</a> showing how to install the standalone Debian Edu /
 529 Skolelinux profile.  This is the profile intended for use at home or
 530 on laptops that should not be integrated into the provided network
 531 services (no central home directory, no Kerberos / LDAP directory etc,
 532 in other word a single user machine).  The result is 11 minutes long,
 533 and show some user applications (seem to be rather randomly picked).
 534 Missed a few of my favorites like celestia, planets and chromium
 535 showing the <a href="http://www.zygotebody.com/">Zygote Body 3D model
 536 of the human body</a>, but I guess he did not know about those or find
 537 other programs more interesting. :) And the video do not show the
 538 advantages I believe is one of the most valuable featuers in Debian
 539 Edu, its central school server making it possible to run hundreds of
 540 computers without hard drives by installing one central
 541 <a href="http://www.ltsp.org/">LTSP server</a>.</p>
 542
 543 <p>Anyway, check out the video, embedded below and linked to above:</p>
 544
 545 <iframe width="420" height="315" src="http://www.youtube.com/embed/w-GgpdqgLFc" frameborder="0" allowfullscreen></iframe>
 546
 547 <p>Are there other nice videos demonstrating Skolelinux?  Please let
 548 me know. :)</p>
 549 </div>
 550       <div class="tags">
 551
 552
 553         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>.
 554
 555
 556       </div>
 557     </div>
 558     <div class="padding"></div>
 559
 560     <div class="entry">
 561       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Finally__Debian_Edu_Wheezy_is_released_today_.html">Finally, Debian Edu Wheezy is released today!</a></div>
 562       <div class="date">29th September 2013</div>
 563       <div class="body"><p>A few hours ago, the announcement for the first stable release of
 564 Debian Edu Wheezy went out from the Debian publicity team.  The
 565 complete announcement text can be found at
 566 <a href="http://www.debian.org/News/2013/20130928">the Debian News
 567 section</a>, translated to several languages.  Please check it out.</p>
 568
 569 <p>There is one minor known problem that we will fix very soon.  One
 570 can not install a amd64 Thin Client Server using PXE, as the /var/
 571 partition is too small.  A workaround is to extend the partition (use
 572 lvresize + resize2fs in tty 2 while installing).</p>
 573 </div>
 574       <div class="tags">
 575
 576
 577         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>.
 578
 579
 580       </div>
 581     </div>
 582     <div class="padding"></div>
 583
 584     <div class="entry">
 585       <div class="title"><a href="http://people.skolelinux.org/pere/blog/Videos_about_the_Freedombox_project___for_inspiration_and_learning.html">Videos about the Freedombox project - for inspiration and learning</a></div>
 586       <div class="date">27th September 2013</div>
 587       <div class="body"><p>The <a href="http://www.freedomboxfoundation.org/">Freedombox
 588 project</a> have been going on for a while, and have presented the
 589 vision, ideas and solution several places.  Here is a little
 590 collection of videos of talks and presentation of the project.</p>
 591
 592 <ul>
 593
 594 <li><a href="http://www.youtube.com/watch?v=ukvUz5taxvA">FreedomBox -
 595 2,5 minute marketing film</a> (Youtube)</li>
 596
 597 <li><a href="http://www.youtube.com/watch?v=SzW25QTVWsE">Eben Moglen
 598 discusses the Freedombox on CBS news 2011</a> (Youtube)</li>
 599
 600 <li><a href="http://www.youtube.com/watch?v=Ae8SZbxfE0g">Eben Moglen -
 601 Freedom in the Cloud - Software Freedom, Privacy and and Security for
 602 Web 2.0 and Cloud computing at ISOC-NY Public Meeting 2010</a>
 603 (Youtube)</li>
 604
 605 <li><a href="http://www.youtube.com/watch?v=vNaIji_3xBE">Fosdem 2011
 606 Keynote by Eben Moglen presenting the Freedombox</a> (Youtube)</li>
 607
 608 <li><a href="http://www.youtube.com/watch?v=9bDDUyJSQ9s">Presentation of
 609 the Freedombox by James Vasile at Elevate in Gratz 2011</a> (Youtube)</li>
 610
 611 <li><a href="http://www.youtube.com/watch?v=zQTmnk27g9s"> Freedombox -
 612 Discovery, Identity, and Trust by Nick Daly at Freedombox Hackfest New
 613 York City in 2012</a> (Youtube)</li>
 614
 615 <li><a href="http://www.youtube.com/watch?v=tkbSB4Ba7Ck">Introduction
 616 to the Freedombox at Freedombox Hackfest New York City in 2012</a>
 617 (Youtube)</li>
 618
 619 <li><a href="http://www.youtube.com/watch?v=z-P2Jaeg0aQ">Freedom, Out
 620 of the Box! by Bdale Garbee at linux.conf.au Ballarat, 2012</a> (Youtube) </li>
 621
 622 <li><a href="https://archive.fosdem.org/2013/schedule/event/freedombox/">Freedombox
 623 1.0 by Eben Moglen and Bdale Garbee at Fosdem 2013</a> (FOSDEM) </li>
 624
 625 <li><a href="http://www.youtube.com/watch?v=e1LpYX2zVYg">What is the
 626 FreedomBox today by Bdale Garbee at Debconf13 in Vaumarcus
 627 2013</a> (Youtube)</li>
 628
 629 </ul>
 630
 631 <p>A larger list is available from
 632 <a href="https://wiki.debian.org/FreedomBox/TalksAndPresentations">the
 633 Freedombox Wiki</a>.</p>
 634
 635 <p>On other news, I am happy to report that Freedombox based on Debian
 636 Jessie is coming along quite well, and soon both Owncloud and using
 637 Tor should be available for testers of the Freedombox solution. :) In
 638 a few weeks I hope everything needed to test it is included in Debian.
 639 The withsqlite package is already in Debian, and the plinth package is
 640 pending in NEW.  The third and vital part of that puzzle is the
 641 metapackage/setup framework, which is still pending an upload.  Join
 642 us on <a href="irc://irc.debian.org:6667/%23freedombox">IRC
 643 (#freedombox on irc.debian.org)</a> and
 644 <a href="http://lists.alioth.debian.org/mailman/listinfo/freedombox-discuss">the
 645 mailing list</a> if you want to help make this vision come true.</p>
 646 </div>
 647       <div class="tags">
 648
 649
 650         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/freedombox">freedombox</a>, <a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet</a>, <a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance</a>, <a href="http://people.skolelinux.org/pere/blog/tags/web">web</a>.
 651
 652
 653       </div>
 654     </div>
 655     <div class="padding"></div>
 656
 657     <p style="text-align: right;"><a href="index.rss"><img src="http://people.skolelinux.org/pere/blog/xml.gif" alt="RSS feed" width="36" height="14" /></a></p>
 658     <div id="sidebar">
 659
 660
 661
 662 <h2>Archive</h2>
 663 <ul>
 664
 665 <li>2013
 666 <ul>
 667
 668 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/01/">January (11)</a></li>
 669
 670 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/02/">February (9)</a></li>
 671
 672 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/03/">March (9)</a></li>
 673
 674 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/04/">April (6)</a></li>
 675
 676 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/05/">May (9)</a></li>
 677
 678 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/06/">June (10)</a></li>
 679
 680 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/07/">July (7)</a></li>
 681
 682 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/08/">August (3)</a></li>
 683
 684 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/09/">September (5)</a></li>
 685
 686 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/10/">October (7)</a></li>
 687
 688 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/11/">November (1)</a></li>
 689
 690 </ul></li>
 691
 692 <li>2012
 693 <ul>
 694
 695 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/01/">January (7)</a></li>
 696
 697 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/02/">February (10)</a></li>
 698
 699 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/03/">March (17)</a></li>
 700
 701 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/04/">April (12)</a></li>
 702
 703 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/05/">May (12)</a></li>
 704
 705 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/06/">June (20)</a></li>
 706
 707 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/07/">July (17)</a></li>
 708
 709 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/08/">August (6)</a></li>
 710
 711 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/09/">September (9)</a></li>
 712
 713 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/10/">October (17)</a></li>
 714
 715 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/11/">November (10)</a></li>
 716
 717 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/12/">December (7)</a></li>
 718
 719 </ul></li>
 720
 721 <li>2011
 722 <ul>
 723
 724 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/01/">January (16)</a></li>
 725
 726 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/02/">February (6)</a></li>
 727
 728 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/03/">March (6)</a></li>
 729
 730 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/04/">April (7)</a></li>
 731
 732 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/05/">May (3)</a></li>
 733
 734 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/06/">June (2)</a></li>
 735
 736 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/07/">July (7)</a></li>
 737
 738 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/08/">August (6)</a></li>
 739
 740 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/09/">September (4)</a></li>
 741
 742 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/10/">October (2)</a></li>
 743
 744 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/11/">November (3)</a></li>
 745
 746 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/12/">December (1)</a></li>
 747
 748 </ul></li>
 749
 750 <li>2010
 751 <ul>
 752
 753 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/01/">January (2)</a></li>
 754
 755 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/02/">February (1)</a></li>
 756
 757 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/03/">March (3)</a></li>
 758
 759 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/04/">April (3)</a></li>
 760
 761 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/05/">May (9)</a></li>
 762
 763 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/06/">June (14)</a></li>
 764
 765 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/07/">July (12)</a></li>
 766
 767 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/08/">August (13)</a></li>
 768
 769 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/09/">September (7)</a></li>
 770
 771 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/10/">October (9)</a></li>
 772
 773 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/11/">November (13)</a></li>
 774
 775 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/12/">December (12)</a></li>
 776
 777 </ul></li>
 778
 779 <li>2009
 780 <ul>
 781
 782 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/01/">January (8)</a></li>
 783
 784 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/02/">February (8)</a></li>
 785
 786 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/03/">March (12)</a></li>
 787
 788 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/04/">April (10)</a></li>
 789
 790 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/05/">May (9)</a></li>
 791
 792 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/06/">June (3)</a></li>
 793
 794 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/07/">July (4)</a></li>
 795
 796 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/08/">August (3)</a></li>
 797
 798 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/09/">September (1)</a></li>
 799
 800 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/10/">October (2)</a></li>
 801
 802 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/11/">November (3)</a></li>
 803
 804 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/12/">December (3)</a></li>
 805
 806 </ul></li>
 807
 808 <li>2008
 809 <ul>
 810
 811 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/11/">November (5)</a></li>
 812
 813 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/12/">December (7)</a></li>
 814
 815 </ul></li>
 816
 817 </ul>
 818
 819
 820
 821 <h2>Tags</h2>
 822 <ul>
 823
 824  <li><a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (13)</a></li>
 825
 826  <li><a href="http://people.skolelinux.org/pere/blog/tags/amiga">amiga (1)</a></li>
 827
 828  <li><a href="http://people.skolelinux.org/pere/blog/tags/aros">aros (1)</a></li>
 829
 830  <li><a href="http://people.skolelinux.org/pere/blog/tags/bankid">bankid (4)</a></li>
 831
 832  <li><a href="http://people.skolelinux.org/pere/blog/tags/bitcoin">bitcoin (7)</a></li>
 833
 834  <li><a href="http://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem (12)</a></li>
 835
 836  <li><a href="http://people.skolelinux.org/pere/blog/tags/bsa">bsa (2)</a></li>
 837
 838  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian">debian (89)</a></li>
 839
 840  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (142)</a></li>
 841
 842  <li><a href="http://people.skolelinux.org/pere/blog/tags/digistan">digistan (10)</a></li>
 843
 844  <li><a href="http://people.skolelinux.org/pere/blog/tags/docbook">docbook (10)</a></li>
 845
 846  <li><a href="http://people.skolelinux.org/pere/blog/tags/drivstoffpriser">drivstoffpriser (4)</a></li>
 847
 848  <li><a href="http://people.skolelinux.org/pere/blog/tags/english">english (224)</a></li>
 849
 850  <li><a href="http://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (21)</a></li>
 851
 852  <li><a href="http://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (12)</a></li>
 853
 854  <li><a href="http://people.skolelinux.org/pere/blog/tags/freeculture">freeculture (12)</a></li>
 855
 856  <li><a href="http://people.skolelinux.org/pere/blog/tags/freedombox">freedombox (5)</a></li>
 857
 858  <li><a href="http://people.skolelinux.org/pere/blog/tags/frikanalen">frikanalen (11)</a></li>
 859
 860  <li><a href="http://people.skolelinux.org/pere/blog/tags/intervju">intervju (37)</a></li>
 861
 862  <li><a href="http://people.skolelinux.org/pere/blog/tags/isenkram">isenkram (7)</a></li>
 863
 864  <li><a href="http://people.skolelinux.org/pere/blog/tags/kart">kart (18)</a></li>
 865
 866  <li><a href="http://people.skolelinux.org/pere/blog/tags/ldap">ldap (8)</a></li>
 867
 868  <li><a href="http://people.skolelinux.org/pere/blog/tags/lenker">lenker (6)</a></li>
 869
 870  <li><a href="http://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (1)</a></li>
 871
 872  <li><a href="http://people.skolelinux.org/pere/blog/tags/mesh network">mesh network (3)</a></li>
 873
 874  <li><a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (25)</a></li>
 875
 876  <li><a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk (236)</a></li>
 877
 878  <li><a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug (156)</a></li>
 879
 880  <li><a href="http://people.skolelinux.org/pere/blog/tags/offentlig innsyn">offentlig innsyn (8)</a></li>
 881
 882  <li><a href="http://people.skolelinux.org/pere/blog/tags/open311">open311 (2)</a></li>
 883
 884  <li><a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (45)</a></li>
 885
 886  <li><a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern (67)</a></li>
 887
 888  <li><a href="http://people.skolelinux.org/pere/blog/tags/raid">raid (1)</a></li>
 889
 890  <li><a href="http://people.skolelinux.org/pere/blog/tags/reprap">reprap (11)</a></li>
 891
 892  <li><a href="http://people.skolelinux.org/pere/blog/tags/rfid">rfid (2)</a></li>
 893
 894  <li><a href="http://people.skolelinux.org/pere/blog/tags/robot">robot (8)</a></li>
 895
 896  <li><a href="http://people.skolelinux.org/pere/blog/tags/rss">rss (1)</a></li>
 897
 898  <li><a href="http://people.skolelinux.org/pere/blog/tags/ruter">ruter (4)</a></li>
 899
 900  <li><a href="http://people.skolelinux.org/pere/blog/tags/scraperwiki">scraperwiki (2)</a></li>
 901
 902  <li><a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (32)</a></li>
 903
 904  <li><a href="http://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (4)</a></li>
 905
 906  <li><a href="http://people.skolelinux.org/pere/blog/tags/skepsis">skepsis (4)</a></li>
 907
 908  <li><a href="http://people.skolelinux.org/pere/blog/tags/standard">standard (43)</a></li>
 909
 910  <li><a href="http://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (3)</a></li>
 911
 912  <li><a href="http://people.skolelinux.org/pere/blog/tags/stortinget">stortinget (9)</a></li>
 913
 914  <li><a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance (20)</a></li>
 915
 916  <li><a href="http://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin (1)</a></li>
 917
 918  <li><a href="http://people.skolelinux.org/pere/blog/tags/valg">valg (8)</a></li>
 919
 920  <li><a href="http://people.skolelinux.org/pere/blog/tags/video">video (39)</a></li>
 921
 922  <li><a href="http://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (4)</a></li>
 923
 924  <li><a href="http://people.skolelinux.org/pere/blog/tags/web">web (28)</a></li>
 925
 926 </ul>
 927
 928
 929     </div>
 930     <p style="text-align: right">
 931  Created by <a href="http://steve.org.uk/Software/chronicle">Chronicle v4.6</a>
 932 </p>
 933
 934   </body>
 935 </html>