- <div class="title"><a href="http://people.skolelinux.org/pere/blog/First_Jessie_based_Debian_Edu_released__alpha0_.html">First Jessie based Debian Edu released (alpha0)</a></div>
- <div class="date">27th October 2014</div>
- <div class="body"><p>I am happy to report that I on behalf of the Debian Edu team just
-sent out
-<a href="https://lists.debian.org/debian-edu-announce/2014/10/msg00000.html">this
-announcement</a>:</p>
-
-<pre>
-The Debian Edu Team is pleased to announce the release of Debian Edu
-Jessie 8.0+edu0~alpha0
-
-Debian Edu is a complete operating system for schools. Through its
-various installation profiles you can install servers, workstations
-and laptops which will work together on the school network. With
-Debian Edu, the teachers themselves or their technical support can
-roll out a complete multi-user multi-machine study environment within
-hours or a few days. Debian Edu comes with hundreds of applications
-pre-installed, but you can always add more packages from Debian.
-
-For those who want to give Debian Edu Jessie a try, download and
-installation instructions are available, including detailed
-instructions in the manual[1] explaining the first steps, such as
-setting up a network or adding users. Please note that the password
-for the user your prompted for during installation must have a length
-of at least 5 characters!
-
- [1] <URL: <a href="https://wiki.debian.org/DebianEdu/Documentation/Jessie">https://wiki.debian.org/DebianEdu/Documentation/Jessie</a> >
-
-Would you like to give your school's computer a longer life? Are you
-tired of sneaker administration, running from computer to computer
-reinstalling the operating system? Would you like to administrate all
-the computers in your school using only a couple of hours every week?
-Check out Debian Edu Jessie!
-
-Skolelinux is used by at least two hundred schools all over the world,
-mostly in Germany and Norway.
-
-About Debian Edu and Skolelinux
-===============================
-
-Debian Edu, also known as Skolelinux[2], is a Linux distribution based
-on Debian providing an out-of-the box environment of a completely
-configured school network. Immediately after installation a school
-server running all services needed for a school network is set up just
-waiting for users and machines being added via GOsa², a comfortable
-Web-UI. A netbooting environment is prepared using PXE, so after
-initial installation of the main server from CD or USB stick all other
-machines can be installed via the network. The provided school server
-provides LDAP database and Kerberos authentication service,
-centralized home directories, DHCP server, web proxy and many other
-services. The desktop contains more than 60 educational software
-packages[3] and more are available from the Debian archive, and
-schools can choose between KDE, Gnome, LXDE, Xfce and MATE desktop
-environment.
-
- [2] <URL: <a href="http://www.skolelinux.org/">http://www.skolelinux.org/</a> >
- [3] <URL: <a href="http://people.skolelinux.org/pere/blog/Educational_applications_included_in_Debian_Edu___Skolelinux__the_screenshot_collection____.html">http://people.skolelinux.org/pere/blog/Educational_applications_included_in_Debian_Edu___Skolelinux__the_screenshot_collection____.html</a> >
-
-Full release notes and manual
-=============================
-
-Below the download URLs there is a list of some of the new features
-and bugfixes of Debian Edu 8.0+edu0~alpha0 Codename Jessie. The full
-list is part of the manual. (See the feature list in the manual[4] for
-the English version.) For some languages manual translations are
-available, see the manual translation overview[5].
-
- [4] <URL: <a href="https://wiki.debian.org/DebianEdu/Documentation/Jessie/Features">https://wiki.debian.org/DebianEdu/Documentation/Jessie/Features</a> >
- [5] <URL: <a href="http://maintainer.skolelinux.org/debian-edu-doc/">http://maintainer.skolelinux.org/debian-edu-doc/</a> >
-
-Where to get it
----------------
-
-To download the multiarch netinstall CD release (624 MiB) you can use
-
- * <a href="ftp://ftp.skolelinux.org/skolelinux-cd/debian-edu-8.0+edu0~alpha0-CD.iso">ftp://ftp.skolelinux.org/skolelinux-cd/debian-edu-8.0+edu0~alpha0-CD.iso</a>
- * <a href="http://ftp.skolelinux.org/skolelinux-cd/debian-edu-8.0+edu0~alpha0-CD.iso">http://ftp.skolelinux.org/skolelinux-cd/debian-edu-8.0+edu0~alpha0-CD.iso</a>
- * rsync -avzP ftp.skolelinux.org::skolelinux-cd/debian-edu-8.0+edu0~alpha0-CD.iso .
-
-The SHA1SUM of this image is: 361188818e036ce67280a572f757de82ebfeb095
-
-New features for Debian Edu 8.0+edu0~alpha0 Codename Jessie released 2014-10-27
-===============================================================================
-
-
-Installation changes
---------------------
-
- * PXE installation now installs firmware automatically for the hardware present.
-
-Software updates
-----------------
-
-Everything which is new in Debian Jessie 8.0, eg:
-
- * Linux kernel 3.16.x
- * Desktop environments KDE "Plasma" 4.11.12, GNOME 3.14, Xfce 4.10,
- LXDE 0.5.6 and MATE 1.8 (KDE "Plasma" is installed by default; to
- choose one of the others see manual.)
- * the browsers Iceweasel 31 ESR and Chromium 38
- * !LibreOffice 4.3.3
- * GOsa 2.7.4
- * LTSP 5.5.4
- * CUPS print system 1.7.5
- * new boot framework: systemd
- * Educational toolbox GCompris 14.07
- * Music creator Rosegarden 14.02
- * Image editor Gimp 2.8.14
- * Virtual stargazer Stellarium 0.13.0
- * golearn 0.9
- * tuxpaint 0.9.22
- * New version of debian-installer from Debian Jessie.
- * Debian Jessie includes about 42000 packages available for
- installation.
- * More information about Debian Jessie 8.0 is provided in the release
- notes[6] and the installation manual[7].
-
- [6] <URL: <a href="http://www.debian.org/releases/jessie/releasenotes">http://www.debian.org/releases/jessie/releasenotes</a> >
- [7] <URL: <a href="http://www.debian.org/releases/jessie/installmanual">http://www.debian.org/releases/jessie/installmanual</a> >
-
-Fixed bugs
-----------
-
- * Inserting incorrect DNS information in Gosa will no longer break
- DNS completely, but instead stop DNS updates until the incorrect
- information is corrected (Debian bug #710362)
- * and many others.
-
-Documentation and translation updates
--------------------------------------
-
- * The Debian Edu Jessie Manual is fully translated to German, French,
- Italian, Danish and Dutch. Partly translated versions exist for
- Norwegian Bokmal and Spanish.
-
-Other changes
--------------
-
- * Due to new Squid settings, powering off or rebooting the main
- server takes more time.
- * To manage printers localhost:631 has to be used, currently www:631
- doesn't work.
-
-Regressions / known problems
-----------------------------
-
- * Installing LTSP chroot fails with a bug related to eatmydata about
- exim4-config failing to run its postinst (see Debian bug #765694
- and Debian bug #762103).
- * Munin collection is not properly configured on clients (Debian bug
- #764594). The fix is available in a newer version of munin-node.
- * PXE setup for Main Server and Thin Client Server setup does not
- work when installing on a machine without direct Internet access.
- Will be fixed when Debian bug #766960 is fixed in Jessie.
-
-See the status page[8] for the complete list.
-
- [8] <URL: <a href="https://wiki.debian.org/DebianEdu/Status/Jessie">https://wiki.debian.org/DebianEdu/Status/Jessie</a> >
-
-How to report bugs
-------------------
-
-<URL: <a href="http://wiki.debian.org/DebianEdu/HowTo/ReportBugs">http://wiki.debian.org/DebianEdu/HowTo/ReportBugs</a> >
-
-About Debian
-============
-
-The Debian Project was founded in 1993 by Ian Murdock to be a truly
-free community project. Since then the project has grown to be one of
-the largest and most influential open source projects. Thousands of
-volunteers from all over the world work together to create and
-maintain Debian software. Available in 70 languages, and supporting a
-huge range of computer types, Debian calls itself the universal
-operating system.
-
-Contact Information
-For further information, please visit the Debian web pages[9] or send
-mail to press@debian.org.
-
- [9] <URL: <a href="http://www.debian.org/">http://www.debian.org/</a> >
-</pre>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Simpler_recipe_on_how_to_make_a_simple__7_IMSI_Catcher_using_Debian.html">Simpler recipe on how to make a simple $7 IMSI Catcher using Debian</a></div>
+ <div class="date"> 9th August 2017</div>
+ <div class="body"><p>On friday, I came across an interesting article in the Norwegian
+web based ICT news magazine digi.no on
+<a href="https://www.digi.no/artikler/sikkerhetsforsker-lagde-enkel-imsi-catcher-for-60-kroner-na-kan-mobiler-kartlegges-av-alle/398588">how
+to collect the IMSI numbers of nearby cell phones</a> using the cheap
+DVB-T software defined radios. The article refered to instructions
+and <a href="https://www.youtube.com/watch?v=UjwgNd_as30">a recipe by
+Keld Norman on Youtube on how to make a simple $7 IMSI Catcher</a>, and I decided to test them out.</p>
+
+<p>The instructions said to use Ubuntu, install pip using apt (to
+bypass apt), use pip to install pybombs (to bypass both apt and pip),
+and the ask pybombs to fetch and build everything you need from
+scratch. I wanted to see if I could do the same on the most recent
+Debian packages, but this did not work because pybombs tried to build
+stuff that no longer build with the most recent openssl library or
+some other version skew problem. While trying to get this recipe
+working, I learned that the apt->pip->pybombs route was a long detour,
+and the only piece of software dependency missing in Debian was the
+gr-gsm package. I also found out that the lead upstream developer of
+gr-gsm (the name stand for GNU Radio GSM) project already had a set of
+Debian packages provided in an Ubuntu PPA repository. All I needed to
+do was to dget the Debian source package and built it.</p>
+
+<p>The IMSI collector is a python script listening for packages on the
+loopback network device and printing to the terminal some specific GSM
+packages with IMSI numbers in them. The code is fairly short and easy
+to understand. The reason this work is because gr-gsm include a tool
+to read GSM data from a software defined radio like a DVB-T USB stick
+and other software defined radios, decode them and inject them into a
+network device on your Linux machine (using the loopback device by
+default). This proved to work just fine, and I've been testing the
+collector for a few days now.</p>
+
+<p>The updated and simpler recipe is thus to</p>
+
+<ol>
+
+<li>start with a Debian machine running Stretch or newer,</li>
+
+<li>build and install the gr-gsm package available from
+<a href="http://ppa.launchpad.net/ptrkrysik/gr-gsm/ubuntu/pool/main/g/gr-gsm/">http://ppa.launchpad.net/ptrkrysik/gr-gsm/ubuntu/pool/main/g/gr-gsm/</a>,</li>
+
+<li>clone the git repostory from <a href="https://github.com/Oros42/IMSI-catcher">https://github.com/Oros42/IMSI-catcher</a>,</li>
+
+<li>run grgsm_livemon and adjust the frequency until the terminal
+where it was started is filled with a stream of text (meaning you
+found a GSM station).</li>
+
+<li>go into the IMSI-catcher directory and run 'sudo python simple_IMSI-catcher.py' to extract the IMSI numbers.</li>
+
+</ol>
+
+<p>To make it even easier in the future to get this sniffer up and
+running, I decided to package
+<a href="https://github.com/ptrkrysik/gr-gsm/">the gr-gsm project</a>
+for Debian (<a href="https://bugs.debian.org/871055">WNPP
+#871055</a>), and the package was uploaded into the NEW queue today.
+Luckily the gnuradio maintainer has promised to help me, as I do not
+know much about gnuradio stuff yet.</p>
+
+<p>I doubt this "IMSI cacher" is anywhere near as powerfull as
+commercial tools like
+<a href="https://www.thespyphone.com/portable-imsi-imei-catcher/">The
+Spy Phone Portable IMSI / IMEI Catcher</a> or the
+<a href="https://en.wikipedia.org/wiki/Stingray_phone_tracker">Harris
+Stingray</a>, but I hope the existance of cheap alternatives can make
+more people realise how their whereabouts when carrying a cell phone
+is easily tracked. Seeing the data flow on the screen, realizing that
+I live close to a police station and knowing that the police is also
+wearing cell phones, I wonder how hard it would be for criminals to
+track the position of the police officers to discover when there are
+police near by, or for foreign military forces to track the location
+of the Norwegian military forces, or for anyone to track the location
+of government officials...</p>
+
+<p>It is worth noting that the data reported by the IMSI-catcher
+script mentioned above is only a fraction of the data broadcasted on
+the GSM network. It will only collect one frequency at the time,
+while a typical phone will be using several frequencies, and not all
+phones will be using the frequencies tracked by the grgsm_livemod
+program. Also, there is a lot of radio chatter being ignored by the
+simple_IMSI-catcher script, which would be collected by extending the
+parser code. I wonder if gr-gsm can be set up to listen to more than
+one frequency?</p>