Archive for category Hardware

size matters: console size comparison

So someone created a comparison picture of all the current available non-handheld consoles. Damn this Nintendo Wii is small.

Source: Aeropause

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after more than 4 years…

… I am back playing a Mario game… soon:

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Windows Vista Beta 2 graphic driver updates available…

The major graphic card manufacturers ATI and NVIDIA decided to release new drivers for Windows Vista Beta 2. So if you can grab them. In my case there was an improvement in speed…

ATI Driver Download

NVIDIA Driver Download

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cleaning up the keyboard…

When a sugar containing, quite sticky substance is spilled over your keyboard… you have to wash it…

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CISCO Catalyst 6509+FWSM to be taken to a test drive…

Today the 6509 + the Firewall Service Module arrived at our office. Quite a heavy machine but we’re really excited to play with it 🙂


in all it’s beauty…

more pictures and infos to come…

5 Comments

VTrak not VTrack

Oh… just in case you are searching for the Promise m500i…. it is VTrak not VTrack. So try this search.

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German CISCO Expo 2006 review

German CISCO Expo 2006 is finally over and from our point of view it was truly a great success.
There were very interessting sometimes cool presentations and demos, a lot of food & snacks and
very colorful light at the party. Over all it was a much better event than all those cisco
CeBit exhibitions I’ve been to before… the new (cisco) economy seem to be back on stage 😉

Keynotes

CISCO’s new vision for next generation networking got a new name: “Intelligent Information Network”!
Now all the routers and switches should become more intelligent, be aware of the users actual location
and connection type (ethernet, wlan, UMTS, …) and voice, data, video are integrated services of
IIN. Doesn’t sound this familiar? Yes! In the days of web 2.0 I think German Telekom would call
this reinvention of the wheel just ISDN 2.0… let’s hope that it will work better this time 😉

BTW: During the T-Systems keynote they showed us a _real hacker_ *huu-hoo* and demonstrated
the unbelievable security risks of unencrypted VoIP by using ARP Spoofing *hu-hoho*. So don’t
ask T-Systems if you have a _real_ security problem.

eLearning

There were several talks about eLearning, eEducation, about the CISCO networking academy, and
the Scottish Schools Digital Network. If we belive in the given facts and figures people with
deep knowledge in networking will have a great time to earn a lot of money during the next years.
But from our point of view there is still no real funding of university research (URP is not that
great). The NetAcad program might be good for people willing to learn how to configure cisco
switches, but not when you are more interessted in building next generation routers, switches, and
networking concepts. So for us this program is more or less just marketing…

Technology power sessions

WLAN is still a lot of fun… Much more interessing was the talk about the modular IOS, EEM, and
Gold. CISCO is rewritting their os from ground and the new one will have some really nice features…
For example a real filesystem with virtual files like /sys (*hu-hoo* think about this twice ;),
embedded event management, processes for more or less every protocol in use and best: an TCL
scripting environment! If you send enough emails to the dev team embedded perl could also
become available. You can win a box of sparkling wine when you implement tetris within TCL *g*

RFID sponsored by German Telekom… great… :/

Burn venture capital, burn!

The party was really a great! Thanks to the orga team… but I still don’t like this “booooming”…

review and pictures by Ahzf

Source: http://www.ahzf.de

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some pictures from the Newcomer Festival “Vorsicht Band! 2006”

To give you an brief impression of the equipment that is necessary to stream and broadcast such a festival, here are some pictures:

Pictures made by der Andi.

Source: streaming.fem.tu-ilmenau.de

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Promise VTrak training in Dortmund

Here are some impressions of the training in Dortmund. Quite many information and hopefully a brand new e-class test setup in the next months.

Impressingly enough: the 1.8l 4 cylinder engine of this Toyota made 100km with about 25l… the display even showed 90,9l/100km from time to time…quite frightening.

Oh and some words to the Toyota itself: bad gearbox, even worse the ride. The clutch: nightmare. To be fair: everything was brand new: the car only had 57km on the clock. Oh: It’s no SIXT rental car…I never got any japanese plastic-bombers from them… THANK GOD!

And small panoramic view of the training room:

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Promise and QLogic event tomorrow


I am about to attend an event by Promise Germany and QLogic. The two partners are going to present their current products and focus on the technical side of storage area networks and current solutions (VTrak… remember? We have several of them…)



I just got the car from the rental so expect some pictures of the journey and the event tomorrow.


Source: http://de.promise.com

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Cisco Expo 2006 in Germany



Technology-ninja correspondent ahzf is attending the Cisco Expo 2006 at the moment. He sent us the first impressions from the expo floors – more details to show up soon:




Source: https://www.ciscoeventreg.com/ciscoexpo2006/germany/index.lasso

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PS3 and all the fuss about it



Despite focusing on the lies we were told about the PS3 in the last year and months here are the hard facts with the source of the information for backup:




  • You won’t get HDMI and Wireless LAN with the “cheap” EURO 499,- version which means you even won’t get BlueRay-HDTV movies with this SKU.


  • 32,5 cm x 9.8 cm x 27,4 cm and 5 kg is HUGE compared to:



    • The Xbоx 360 weights 3.5 kg and is 30,9 cm x 8,3 cm x 25,8 cm
      or even


    • The Xbоx weight 4 kg and is 32,0 cm x 10,1 cm x 26,0 cm


  • you won’t get a controller with rumble/vibration… because of the innovative motion sensors…


  • you get GigaBit ethernet… for what purpose?

stay tuned for more tales of interest…


Source 1: PS3 press release
Source 2: PS3 controller press release

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the first coup: the Venzero ONE … share the love!


99 grams is enough. They certainly are right on that point and on many others. 8 GB, 320×240 display (2″), sleek black look, MP3, WM*, FM-Radio, RSS Feeds, audio and video podcasts (though: no video in germany (why?!))



And there is more.. You get this port on one side of the gadget:



Venzero calls it “SharePort” and extends the USB-on-the-Go! considerably says Venzero… One feature only the Venzero ONE comes with is the so calles “MusicMarker”. You can record short audio clips while you’re on the road/in the bus/train whatever. Back at home you can sync it with your PC and with venzeros’ servers et voilá: you get the artist and title of the song which was playing in your short audio recording. A great feature and I cannot wait to test it.


Venzero says it’ll be available in mid-June 2006 for about 289,90 Euro. (remember: an iPod comes with 4 GB at 249 Euro…)


Source: http://www.venzero.com

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hands-off! unattended windows

Since Nico wrote some articles about the Windows unattendet installation procedure I decided to take a closer look. And you can too:

“Have you ever wanted a Windows CD that would install Windows by automatically putting in your name, product key, timezone and regional settings? And have it merged with the latest Service Pack to save time? Followed by silently installing all your favourite applications along with DirectX 9.0c, .Net Framework 1.1 and then all the required hotfixes, updated drivers, registry tweaks, and a readily patched UXTheme.dll without any user interaction whatsoever? Then this guide will show you how you can do just that! “

Source: http://unattended.msfn.org

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some information about highspeed memory cards…


A widely known electronic store (in germany) did an advertisement for the fun and information of everyone:



The text:


“If you want to take a picture of fast moving objects: Speed counts! Every delay of the memory card can distort the picture, or even worse: the motive is not visible. There’s an end of it! The new HighSpeed-Memory cards transfer the picture data at up to 20 MBit per second. Even a formula 1 world champion could not escape.


The data transfer to your PC only takes 5 seconds, instead of the 20 seconds with a normal memory card.”


Hmkay… understood?


Source: DSLR-Forum

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Wireless Worlds

It started like a fairy tale


Son to father: “Hey Dad! What about these strange slots on the side of my notebook?”


Father to son: “Son! These things are made for PCMCIA-Cards. What a coincidence that you are asking about it. I just have one of these cards in my pocket.”


So today with fewer fairy and more reality I had the opportunity to test a Vodafone Mobile Connect Card UMTS Broadband manufactured by Novatel.





After an easy installation it worked immediately. Unfortunately due to the lack of available UMTS (a mere 500 meters to far away for it…) I had to go with GPRS.


The profile automatically switches between it – if you have chosen it during installation.



the menu



connected



With a flatrate the whole package costs about 30€ a month with no additional costs for the PCMCIA-card.


Jens Heymann

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universal connections



“this is an example of technology being clearly understood and accepted by the general public. something democratic evolves and develops and therefore often even receives a totally different usage than was originally intended. given the current, often exotic use of USB, it would even be argued that there is a ‘USB subculture’!”


Source: http://www.dialog05.com/

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How to setup secure 802.1x WPA2 enterprise wireless lan on a linksys WRT54G / GS Revision 4

This article is in german, but I am going to make a translated english version available soon. Thanks to Volker -cosrahn- Henze for writing this great how-to.


Für Feedback und/oder Fragen bitte die Kommentarfunktion verwenden.





VORWORT


Dieses Howto ist ein bischen anders als andere. Es ist ein “Monolitisches” Howto. Wir haben sozusagen einen Snapshot des, bis dato, aktuellen OpenWRT auf unseren Server gezogen und werden damit das gesamte System aufbauen. Es wird keine Updates geben. Das ist natürlich nicht gut aber wir haben diesen Ansatz gewählt um ein Howto zu realisieren bei dem keine Fragen offen bleiben. Also wenn Du es GENAU so machst wie wir hier, solltest Du danach einen wunderschönen Linksys haben der dir einen sicheren und komfortablen Weg bietet dein WLAN vor Unbefugten zu schützen aber trotzdem schnell und einfach Freunden, Bekannten und Nachbarn den Zugriff zu gewähren oder wieder zu enziehen. Warum kein Customized-Image? Wir müssten es testen und dazu felht einfach die Zeit und die Hardware. Aber ich denke das wir demnächst evtl. solch ein Image bauen werden. Allerdings hat solch ein Howto auch den Vorteil das ihr wisst was in eurem Linksys steckt und nicht einfach sagt “Ich glaub der Klumpen da in der Ecke macht das…” Gut dann viel Spass!


VORRAUSSETZUNGEN




  • Linksys WRT54GS Revision 4

  • Ein Rechner mit telnet und SSH (SSH für Windowser gibt es hier)

  • Möglichkeiten Dateien per scp zu übertragen (mit scp, WinSCP usw.)

  • Grundkenntnisse mit dem Umgang mit Maus und Tastatur

HARDWARE


Linksys auspacken. Die Warnung “Zuerst CD laufen lassen, dann die Kabel anschließen.” kann man getrost überlesen. Und steckt nun das beiliegende Kabel an den Port 1 und an einen beliebigen Rechner. Nun bekommt man eine IP (192.168.1.100), die IP des Linksys ist die 192.168.1.1 also mit http://192.168.1.1 in deinem Browser kommst Du auf das Webinterface. Login: admin und Passwort: admin



Die Logindaten sollten auch auf der beiliegenden
Dokumentations-CD zu finden sein.



So sieht das Webfrontend von Linksys aus. Nach dem Flashen wir der Linksys kein
Webfrontend haben. Man kann allerdings eines Nachinstallieren.
Aber dies ist ein anderes Howto…


FIRMWARE UPDATE


Die entsprechende Firmware erhält man hier: openwrt-wrt54gs_v4-jffs2.zip (1,61 MB) – Dies ist ein Mirror des openwrt.org-Downloads.


!!!!!!!!!! ACHTUNG nun wirds heiß !!!!!!!!!!
Überprüfe unbedingt noch einmal ob nicht doch ein Stromausfall angekündigt wurde oder der Nachbar versucht mit dem Föhn baden zu gehen. Ein Stromausfall wäre fatal für den Linksys.



Klick auf Administration->Firmware Upgrade



Die Datei openwrt-wrt54gs_v4-jffs2.bin angeben



laufendes Update


DAS ERSTE LOGIN


Nun ist es soweit. Wenn alles geklappt hat kannst du dich per telnet einloggen.



Das erste Telnet


root@OpenWrt:~# telnet 192.168.1.1
Trying 192.168.1.1…
Connected to 192.168.1.1.
Escape character is ‘^]’.
=== IMPORTANT ============================
Use ‘passwd’ to set your login password
this will disable telnet and enable SSH
——————————————

BusyBox v1.00 (2006.03.27-00:00+0000) Built-in shell (ash)
Enter ‘help’ for a list of built-in commands.

_______ ________ __
| |.—–.—–.—–.| | | |.—-.| |_
| – || _ | -__| || | | || _|| _|
|_______|| __|_____|__|__||________||__| |____|
|__| W I R E L E S S F R E E D O M
WHITE RUSSIAN (RC5) ——————————-
* 2 oz Vodka Mix the Vodka and Kahlua together
* 1 oz Kahlua over ice, then float the cream or
* 1/2oz cream milk on the top.
—————————————————
root@OpenWrt:/#


Nach dem einloggen erstmal ein Reset da die Dateisysteme noch read-only sind:

root@OpenWrt:~# reboot

Nach diesem Reboot kann man sich wieder einloggen. Als erstes muss ein neues Passwort gesetzt werden:

root@OpenWrt:~# telnet 192.168.1.1
root@OpenWrt:~# passwd
Changing password for root
Enter the new password (minimum of 5 characters)
Please use a combination of upper and lower case letters and numbers.
Enter new password:
Re-enter new password:
Password changed.



Nun loggen wir uns wieder aus, da Telnet nicht besonders sicher ist
und jeder mitlesen könnte was wir eingeben.

root@OpenWrt:~# exit
volker@buran ~ $ ssh root@192.168.1.1
root@192.168.1.1’s password:

BusyBox v1.00 (2005.07.18-21:49+0000) Built-in shell (ash)
Enter ‘help’ for a list of built-in commands.

_______ ________ __
| |.—–.—–.—–.| | | |.—-.| |_
| – || _ | -__| || | | || _|| _|
|_______|| __|_____|__|__||________||__| |____|
|__| W I R E L E S S F R E E D O M
WHITE RUSSIAN (RC2) ——————————-
* 2 oz Vodka Mix the Vodka and Kahlua together
* 1 oz Kahlua over ice, then float the cream or
* 1/2oz cream milk on the top.
—————————————————
root@OpenWrt:~#


INTERNET

Nun sollte man sich um Internet kümmern. Dies ist aber nicht Teil dieses How-To da es da einfach sehr viele Möglichkeiten gibt einen Linksys mit dem Internet zu verbinden. Deshalb die, meiner Meinung nach, zwei gängigsten hier und noch mehr Infos dazu gibt es hier.

FeM-Net oder andere größere LANs


Hier die Vorgehensweise wenn ihr das Gerät an einem größeren LAN wie dem FeM-Net betreiben wollt. Bitte achtet darauf das der Internet-Port(das ist der der ein Stückchen weiter weg ist on den anderen) des Linksys mit dem LAN verbunden ist. ACHTUNG wenn ihr einen anderen Port mit dem FeM-Net verbindet wird euer FeM-Net-Port deaktiviert.


Jetzt braucht ihr die MAC-Adresse des Linksys um ihn im FeM-Net freizuschalten. Das ist ganz einfach.

root@OpenWrt:~# ifconfig vlan1
vlan1 Link encap:Ethernet HWaddr 00:14:BF:CA:FE:01
inet6 addr: fe80::214:bfff:feca:fe01/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 MiB) TX bytes:0 (0.0 MiB)
root@OpenWrt:~#

Bei unserem Gerät wäre die MAC-Adresse “00:14:BF:CA:FE:01”.


DSL und ISP


Das ist leicht. Einfach ein paar NVRAM Variablen setzen und das DSL-Modem an den WAN-Port des Linksys stecken.


nvram set wan_ifname=ppp0
nvram set wan_proto=pppoe
nvram set ppp_idletime=10
nvram set ppp_mtu=1492
nvram set ppp_passwd=
nvram set ppp_redialperiod=15
nvram set ppp_username=
nvram set pppoe_ifname=vlan1
nvram commit

Wenn du fertig bist schalte das WAN-Interface ein mit:

ifup wan

SOFTWAREPAKETE NACHINSTALLIEREN

Jetzt machen wir erstmal ein Update der Softwarepakete. Wir stellen eine Packet-Sammlung bereit um sicherzustellen das alles genauso funktioniert wie wir es beschrieben haben. Das heißt aber nicht das diese Howto auch nicht mit späteren Versionen funktionieren wird.

root@OpenWrt:~# cp /etc/ipkg.conf /etc/ipkg.conf.old
root@OpenWrt:~# vi /etc/ipkg.conf
* Taste “i” drücken (Insert-Modus)
* nun die folgenden Einträge ändern
von
src whiterussian http://downloads.openwrt.org/whiterussian/packages
src non-free http://downloads.openwrt.org/whiterussian/packages/non-free
nach
src whiterussian http://www.technology-ninja.com/whiterussian/packages
src non-free http://www.technology-ninja.com/whiterussian/packages/non-free
den Rest lassen wir einfach so
* Taste “Esc” drücken (Kommando-Modus)
:wq
root@OpenWrt:~#

Jetzt kann man mit einem ipkg update die Paket-Informationen holen.



root@OpenWrt:~# ipkg update
Downloading
http://www.technology-ninja.com/whiterussian/packages/Packages …
Connecting to www.technology-ninja.com[141.24.190.9]:80
Packages 100% |******************************************|
121 KB 00:00 ETA
Done.
Updated list of available packages in /usr/lib/ipkg/lists/whiterussian
Downloading
http://www.technology-ninja.com/whiterussian/packages/non-free/Packages …
Connecting to www.technology-ninja.com[141.24.190.9]:80
Packages 100% |******************************************|
568 00:00 ETA
Done.
Updated list of available packages in /usr/lib/ipkg/lists/non-free

INSTALLIEREN DES NTP-CLIENT

Dieser Schritt ist wichtig da ihr mit diesem Tool den Linksys mit der Zeit im Internet syncronisieren müsst. Der Linksys besitzt keine Pufferbatterie und kann seine Zeit nicht zwischenspeichern. Die Zeit wird aber unbediengt gebraucht damit die PKI(das mit OpenSSL erstellte Zeug) funktioniert.

root@OpenWrt:~# ipkg install ntpclient

Downloading http://www.technology-ninja.com/whiterussian/packages/
ntpclient_2003_194-2_mipsel.ipk …
Connecting to www.technology-ninja.com[141.24.190.9]:80
ntpclient_2003_194-2 100% |*******************************************|
9555 00:00 ETA
Done.
Unpacking ntpclient…Done.
Configuring ntpclient…Done.
root@OpenWrt:~#


Nun schnell die Zeit syncen.

root@OpenWrt:~# ntpclient -h timesrv1.tu-ilmenau.de -s

Ggf. kann hier statt timesrv1.tu-ilmenau.de ein beliebig anderer Zeitserver verwendet werden.

Und ein Startscript welches beim einschalten des Linksys die aktuelle Zeit aus dem Internet holt.

root@OpenWrt:~# echo “#!/bin/ash” >/etc/init.d/S70ntp
root@OpenWrt:~# echo “ntpclient -h timesrv1.tu-ilmenau.de -s” >>/etc/init.d/S70ntp
root@OpenWrt:~# chmod a+x /etc/init.d/S70ntp

Geschaft, nun haben wir, so Gott will, immer die richtige Uhrzeit auf unserem Linksys.

DIE PROPRIETÄREN TOOLS


Installation der propritären Tools. Auch wenn es nicht schön ist, diesen Schritt kannst Du nicht überspringen. Der propritäre NAS und die WL-tools müssen nachinstalliert werden.


root@OpenWrt:~# ipkg install nas

Downloading http://www.technology-ninja.com/whiterussian/packages/non-free/
nas_3.90.37-16_mipsel.ipk …
Connecting to www.technology-ninja.com[141.24.190.9]:80
nas_3.90.37-16_mipse 100% |******************************************|
75771 00:00 ETA
Done.
Unpacking nas…Done.
Configuring nas…Done.
root@OpenWrt:~# ipkg install wl

Downloading http://www.technology-ninja.com/whiterussian/packages/non-free/
wl_3.90.37-1_mipsel.ipk …
Connecting to www.technology-ninja.com[141.24.190.9]:80
wl_3.90.37-1_mipsel. 100% |******************************************|
40906 00:00 ETA
Done.
Unpacking wl…Done.
Configuring wl…Done.
root@OpenWrt:~#


Der NAS wird benötigt um die Kommunikation zwischen WLAN-Device des Linksys und dem Radius-Server. Die WL-Tools werden benötigt um alle Funktionen des propritären WLAN-Treibers zu nutzen.

OPENSSL

Mit OpenSSL wird nun eine Root-CA erstellt. Dies bietet die Möglichkeit dynamisch Zertifikate an beliebige Personen zu verteilen ohne das ihr euch kompliziert Pre-Shared-Keys zuflüstern müsst. Außerdem kann man Zertifikate zurückziehen wenn man jemanden nicht mehr leiden kann. Das ist besonders in größeren Infrastrukturen sehr sinnvoll. Installiert euch openssl-utils auf eurem, mittlerweile liebgewonnen, Linksys. Im übrigen ist es ratsam die Root-CA auf einem anderen PC zu erstellen. Hier der Einfachheit-wegen direkt auf dem Linksys.


root@OpenWrt:~# ipkg install openssl-util

Legt euch ein Verzeichnis an in dem die Root-CA gespeichert wird.

root@OpenWrt:~# cd /usr/share/
root@OpenWrt:/usr/share/CA# mkdir CA
root@OpenWrt:/usr/share/CA# cd CA

OpenSSL brauch ein paar Verzeichnisse, in dem es seinen sinnlosen Mist ablegen kann.

root@OpenWrt:/usr/share/CA# mkdir certs crl newcerts private users

Erstelle die Seriennummer und die Indexdatei für die Root-CA.

root@OpenWrt:/usr/share/CA# echo “01” > serial
root@OpenWrt:/usr/share/CA# cp /dev/null index.txt
root@OpenWrt:/usr/share/CA# cp /etc/ssl/openssl.cnf .

Mach eine Kopie der Orginal OpenSSL-Konfig-Datei und ändere es wie Du es benötigst.

root@OpenWrt:/usr/share/CA# vi openssl.cnf
* Taste “i” drücken (Insert-Mode)
* mit den Pfeiltasten nach unten scrollen bis zum Feld [ CA_default ]
* den Parameter
dir = ./demoCA
* tauschen gegen
dir = ./
* Dann die beliebigen Anpassungen machen
* Taste “ESC” drücken (Kommando-Modus)
:wq
root@OpenWrt:/usr/share/CA#

Für die Client Zertifikate benötigt man spezielle Windows XP Extensions. Dazu legen wir eine neue Datei mit dem Namen xpextensions an.


root@OpenWrt:/usr/share/CA# vi xpextensions
* Taste “i” drücken (Insert-Mode)
Die Zeilen hinzufügen
[ xpclient_ext ]
extendedKeyUsage = 1.3.6.1.5.5.7.3.2
[ xpserver_ext ]
extendedKeyUsage = 1.3.6.1.5.5.7.3.1
* Taste “ESC” drücken (Kommando-Modus)
:wq
root@OpenWrt:/usr/share/CA#

GENERIEREN DES ROOT-CA-ZERTIFIKATS

Sie ist 1095 Tage gültig. Das kann natürlich nach belieben angepasst werden in dem man die Zahl nach der Option -days verändert.

root@OpenWrt:/usr/share/CA# openssl req -new -x509 \
-keyout private/cakey.pem -out cacert.pem -days 1095 -config openssl.cnf
Generating a 1024 bit RSA private key
………………………………………………..++++++
…………++++++
writing new private key to ‘private/cakey.pem’
Enter PEM pass phrase: “Das_Root-CA_Passwort”
Verifying – Enter PEM pass phrase: “Das_Root-CA_Passwort”
—–
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter ‘.’, the field will be left blank.
—–
Country Name (2 letter code) [AU]:DE
State or Province Name (full name) [Some-State]:Thueringen
Locality Name (eg, city) []:Ilmenau
Organization Name (eg, company) [Internet Widgits Pty Ltd]:FeM e.V.
Organizational Unit Name (eg, section) []:Technik
Common Name (eg, YOUR name) []:Cosrahn
Email Address []:somemailadress
root@OpenWrt:/usr/share/CA#

Tipp: Merkt euch das Passwort. Und dieses sollte niemals in falsche Hände geraten.


root@OpenWrt:/usr/share/CA# openssl pkcs12 -export -in cacert.pem -inkey private/cakey.pem \
-out caroot.p12 -cacerts -descert
Enter pass phrase for private/cakey.pem: “Das_Root-CA_Passwort”
Enter Export Password: “caroot_p12_Passwort” (kann auch leer sein)
Verifying – Enter Export Password: “caroot_p12_Passwort” (kann auch leer sein)
root@OpenWrt:/usr/share/CA# openssl pkcs12 -in caroot.p12 -out caroot.pem
Enter Import Password: “caroot_p12_Passwort”
MAC verified OK
Enter PEM pass phrase: “caroot_pem_Passwort”
Verifying – Enter PEM pass phrase: “caroot_pem_Passwort”
root@OpenWrt:/usr/share/CA#

Und für Windows.

root@OpenWrt:/usr/share/CA# openssl x509 -in cacert.pem \
-inform PEM -out cacert.der -outform DER

RADIUS SERVER ZERTIFIKAT REQUEST

root@OpenWrt:/usr/share/CA# openssl req -nodes -new -x509 -keyout radius-req.pem \
-out radius-req.pem -days 730 -config openssl.cnf
Generating a 1024 bit RSA private key
…++++++
…++++++
writing new private key to ‘radius-req.pem’
—–
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter ‘.’, the field will be left blank.
—–
Country Name (2 letter code) [AU]:DE
State or Province Name (full name) [Some-State]:Thueringen
Locality Name (eg, city) []:Ilmenau
Organization Name (eg, company) [Internet Widgits Pty Ltd]:FeM e.V.
Organizational Unit Name (eg, section) []:Technik
Common Name (eg, YOUR name) []:Cosrahn
Email Address []:somemailaddress
root@OpenWrt:/usr/share/CA# openssl x509 -x509toreq \
-in radius-req.pem -signkey radius-req.pem -out radius-tmp.pem
Getting request Private Key
Generating certificate request
root@OpenWrt:/usr/share/CA#

Zertifizieren des Request Bitte achte hier auf die Reihenfolge “-infiles radius-tmp.pem” ist die letzte Option in der Kommandozeile.

root@OpenWrt:/usr/share/CA# openssl ca -config openssl.cnf \
-policy policy_anything -out radius-cert.pem -extensions xpserver_ext \
-extfile xpextensions -infiles radius-tmp.pem
Using configuration from openssl.cnf
Enter pass phrase for /usr/share/CA/private/cakey.pem: “Das_Root-CA_Passwort”
Check that the request matches the signature
Signature ok
Certificate Details:
Serial Number: 1 (0x1)
Validity
Not Before: Jan 1 05:15:35 2000 GMT
Not After : Dec 31 05:15:35 2000 GMT
Subject:
countryName = DE
stateOrProvinceName = Thueringen
localityName = Ilmenau
organizationName = FeM e.V.
organizationalUnitName = Technik
commonName = Cosrahn
emailAddress = somemailaddress
X509v3 extensions:
X509v3 Extended Key Usage:
TLS Web Server Authentication
Certificate is to be certified until Dec 31 05:15:35 2000 GMT (365 days)
Sign the certificate? [y/n]:y

1 out of 1 certificate requests certified, commit? [y/n]y
Write out database with 1 new entries
Data Base Updated
root@OpenWrt:/usr/share/CA#


Konvertieren des Zertifikats in PKCS12-Datei damit es lesbar für Outlook; MSIE; Mozilla wird. (dieser Schritt ist nicht unbedingt nötig, da unser Radius kein PKCS12 benötigt).

openssl pkcs12 -export -in radius-cert.pem -out radius-cert.p12\-inkey radius-req.pem -descert

CLIENT ZERTIFIKAT REQUEST

Dieser Schritt muss für jeden Client wiederholt werden.

root@OpenWrt:/usr/share/CA# openssl req -nodes -new -x509\
-keyout client-req.pem -out client-req.pem -days 730 -config openssl.cnf
Generating a 1024 bit RSA private key
…….++++++
…………++++++
writing new private key to ‘client-req.pem’
—–
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter ‘.’, the field will be left blank.
—–
Country Name (2 letter code) [AU]:DE
State or Province Name (full name) [Some-State]:Thueringen
Locality Name (eg, city) []:Ilmenau
Organization Name (eg, company) [Internet Widgits Pty Ltd]:FeM e.V.
Organizational Unit Name (eg, section) []:Technik
Common Name (eg, YOUR name) []:Cosrahn
Email Address []:somemailAddress
root@OpenWrt:/usr/share/CA# openssl x509 -x509toreq -in client-req.pem \
-signkey client-req.pem -out client-tmp.pem
Getting request Private Key
Generating certificate request
root@OpenWrt:/usr/share/CA#

Zertifizieren der Request – Bitte achte auf die richtige Reihenfolge “-infiles client-tmp.pem” ist die letzte Option auf der Kommandozeile.

root@OpenWrt:/usr/share/CA# openssl ca -config openssl.cnf -policy policy_anything \
-out client-cert.pem -extensions xpclient_ext -extfile xpextensions \
-infiles client-tmp.pem
Using configuration from openssl.cnf
Enter pass phrase for /usr/share/CA/private/cakey.pem:
DEBUG[load_index]: unique_subject = “yes”
Check that the request matches the signature
Signature ok
Certificate Details:
Serial Number: 2 (0x2)
Validity
Not Before: Jan 1 05:37:37 2000 GMT
Not After : Dec 31 05:37:37 2000 GMT
Subject:
countryName = DE
stateOrProvinceName = Thueringen
localityName = Ilmenau
organizationName = FeM e.V.
organizationalUnitName = Technik
commonName = Cosrahn
emailAddress = somemailAddress
X509v3 extensions:
X509v3 Extended Key Usage:
TLS Web Client Authentication
Certificate is to be certified until Dec 31 05:37:37 2000 GMT (365 days)
Sign the certificate? [y/n]:y

1 out of 1 certificate requests certified, commit? [y/n]y
Write out database with 1 new entries
Data Base Updated
root@OpenWrt:/usr/share/CA#


Konvertieren des Zertifikat in PKCS12-Datei (Outlook; MSIE; Mozilla).

openssl pkcs12 -export -in client-cert.pem -out client-cert.p12 \
-inkey client-req.pem -descert

Um grössere Sauerein zu vermeiden hab ich den obigen Teil zu einem kleinen Script zusammen gefasst. Dieses kleine Script hilft beim erstellen eines neuen Clients. Man findet die erstellten Zertifikate in /usr/share/CA/users/[clientname].

Hier das Skript: mkclient.sh.zip (,43 KB)


Man kann nun zB. einfach mit:


root@OpenWrt:/usr/share/CA# ./mkclient.sh Paul

ein Zertifikat für den User “Paul” erstellen.

SONSTIGE DATEIEN

Um den Verschlüsselungsspass komplett zu machen brauchen wir noch eine random-Datei und eine Diffi-Hellmann-Parameter Datei. Dazu gehen wir wie folgt vor.


root@OpenWrt:/usr/share/CA# openssl dhparam -out dh1024.pem 1024
Generating DH parameters, 1024 bit long safe prime, generator 2
This is going to take a long time
…………………………………………..
…………..+……………………………..
+………………………………….+……..
……….+…………….+………………….
…………..+……………………………..
…………………………………………..
…………………………………………..
+….+………….+………………………++*
++*++*
root@OpenWrt:/usr/share/CA# dd if=/dev/urandom of=random bs=1k count=1

WAS HABEN WIR JETZT ALLES?


Wir haben jetzt viele Dateien generiert aber welche ist jetzt wozu da? Also werden wir das jetzt mal aufdröseln.


radius-req.pem – der Key
radius-cert.pem – das Zertifikat
cacert.pem und cacert.der – das CA-Zertifikat
dh1024.pem – das DH Parameter
random – beinhaltet einfach nur zufällige Daten


WELCHE DATEI GEHÖRT WOHIN?


Der Client:


Linux
/usr/share/CA/client-cert.pem
/usr/share/CA/client-req.pem
/usr/share/CA/cacert.pem
Windows
/usr/share/CA/client.p12
/usr/share/CA/cacert.der
diese Dateien müssen auf den Rechner der sich in das WLAN einloggen will.

Die Dateien für den Radius behandeln wir später.

RADIUS SERVER

Nach dem wir das geschaft haben, können wir mit dem Radius-Server weiter machen. Wenn Du schon einen funktionierenden Radius-Server in deinem Netz benutzt, kannst Du diesen Schritt überspringen. Um den FreeRadius-Server zu installieren geht man wie folgt vor:

root@OpenWrt:~# ipkg install freeradius

root@OpenWrt:~# ipkg install freeradius-utils

root@OpenWrt:~# ipkg install freeradius-mod-eap

root@OpenWrt:~# ipkg install freeradius-mod-eap-md5

root@OpenWrt:~# ipkg install freeradius-mod-eap-peap

root@OpenWrt:~# ipkg install freeradius-mod-eap-tls

root@OpenWrt:~# ipkg install freeradius-mod-eap-ttls

root@OpenWrt:~# ipkg install freeradius-mod-files

root@OpenWrt:~# ipkg install freeradius-mod-pap

root@OpenWrt:~#

Bitte achte darauf dass du kein Paket vergesst.


Damit der RADIUS auch nach einem reboot zur richtigen Zeit startet, muss das Startscript noch umbenannt werden.


mv /etc/init.d/radiusd /etc/init.d/S41radiusd

Dann die erstellten OpenSSL-Zertifikate kopieren.

mkdir /etc/freeradius/ca
cp /usr/share/CA/cacert.pem /etc/freeradius/ca
cp /usr/share/CA/radius-req.pem /etc/freeradius/ca
cp /usr/share/CA/radius-cert.pem /etc/freeradius/ca
cp /usr/share/CA/dh1024.pem /etc/freeradius/ca/
cp /usr/share/CA/random /etc/freeradius/ca/

Die wichtigen Dateien für die Radius Konfiguration sind



  • clients.conf
  • eap.conf
  • radiusd.conf
  • users

CLIENT.CONF


client 127.0.0.1 {
secret = Das_RADIUS_Passwort
shortname = localhost
nastype = other
}

EAP.CONF

Download

802.1x AKTIVIEREN

Nun wollen wir einfach mal unsere 802.1X Umgebung aktivieren.


root@OpenWrt:~# nvram set wl0_akm=wpa wpa2
root@OpenWrt:~# nvram set wl0_auth_mode=radius
root@OpenWrt:~# nvram set wl0_crypto=aes+tkip
root@OpenWrt:~# nvram set wl0_radius_ipaddr=127.0.0.1
root@OpenWrt:~# nvram set wl0_radius_key=Das_RADIUS_Passwort
root@OpenWrt:~# nvram set wl0_radius_port=1812
root@OpenWrt:~# nvram set wl0_ssid=My_8021X_Network
root@OpenWrt:~# nvram set wan_hostname=My_8021X_Gateway
root@OpenWrt:~# nvram set wl0_wep=aes+tkip
root@OpenWrt:~# nvram commit

Nun sollte nach einem Reboot der Zauber beginnen. Viel Spass!

MEHR SOFTWARE

ipkg install wireless-tools
ipkg install webif

LINKS

WPA2 Enterprise-Howto http://wiki.openwrt.org/OpenWrtDocs/Wpa2Enterprise
NAS-Howto http://wiki.openwrt.org/OpenWrtDocs/nas
OpenWRT Konfig Hilfen http://wiki.openwrt.org/OpenWrtDocs/Configuration
OpenSSL PKCS12 http://www.openssl.org/docs/apps/pkcs12.html
OpenSSL X509 http://www.openssl.org/docs/apps/x509.html
FeM-Wiki https://info.fem.tu-ilmenau.de/wiki/index.php/Sicheres_WLAN_mit_einem_Linksys

8 Comments

Virtual Server 2005 R2: Implementing production servers…

In case you’re wondering why I am not writing that much articles at the moment…

I am currently working on the Virtual Server Implementation of the MSDNAA download servers for 4 universities here in germany…

Source: Microsoft Virtual Server 2005 R2

2 Comments

even that’s going to be automated…

It seems that we have robots for everything these days: even for this last bastion of mankind.

“RoboDump is a robot. Sort of. And it poops. Sort of. Forever. A horrible, never-ending bowel movement complete with straining grunts, horrific gas, splashes, and pee sounds.”



not an iPott ™

Source: http://triggur.org/robodump/

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DJ cake…sounds gooood tastes goooood



it’s a birthday cake for a DJ…


Source: hoerschaden.de

2 Comments

Gigabyte I-Ram: How fast can you boot?


Everyone knows about those solid-state disks. And everyone knows that there are not-so-solid disks that utilise normal RAM for data storage.


“The i-RAM’s greatest asset is easily its simplicity. Just populate the card with memory, plug it into an available PCI slot, attach a Serial ATA cable to your motherboard, and you’ve got yourself a solid-state hard drive. There’s no need for drivers, extra software, or even Windows—the i-RAM is detected by a motherboard BIOS as a standard hard drive, so it should work with any operating system. In fact, because the i-RAM behaves like a standard hard drive, you can even combine multiple i-RAMs together in RAID arrays.”



So here’s a Windows XP running and even more impressive booting on one of that gadgets… Oh man I want one of those!



if this doesn’t show up…try to click here.


Source 1: http://techreport.com/reviews/2006q1/gigabyte-iram/index.x?pg=1
Source 2: http://video.google.com/videoplay?docid=-51784544344753709&q=%22i-ram%22

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IP multiple socket outlet…


The IP power-outlets for the planet-lab machine arrived. What a gadget to play with 🙂




Source: http://www.planet-lab.org/

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the last moment

I found the power supply at the very last moment…

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first official ps3 screenshots? something smells bad in sony land…

This is what is called the first official screenshots of a Playstation 3 game…:



Well… that looks a little bit different from the pre-rendered screenshots we where shown earlier… the final devkits will be available in June… Launch in November… Blue-Ray drive…Cell Processor… 60 GB hard-disk… what’s this thing going to cost? My first born? A 1000 Euro? In my opinion the only reason why Sony does not allow a closer look is, because people would see what die PS3 really is capable of…which is in no way more than a 360… I for myself expect exactly the same graphics and features the 360 delivers today… but when I look at the screenshots… well – maybe I was to optimistic with the graphics….

Source: http://ps3.ign.com/articles/695/695890p1.html

3 Comments

AIM…oh well not the Instant Messenger…but Accurate Image Manipulation…

When it comes to washed-out colors…or green/red/blue tinted displays… try to calibrate them with the help of this great site. Thanks to Kiesow.

“Accurate Image Manipulation for Desktop Publishing (AIM) is devoted for the best possible quality in the desktop publishing workflow. This calls for accurate calibration and correct choice for the working space.

Very accurate monitor gamma calibration charts, CGI simulations for Kodak Q-60 and Agfa IT8 calibration targets, Photoshop plug-ins and much more are available for download. Many evaluations are provided.

The calibration setup that is in use in high-end professional digital imaging, the linear workflow, is explained here in detail as well as the issues of CRT gamma.



this is NOT usable for calibration…go to the site…

Source 1: http://www.kiesows.de/blog/2006/03/11/kalibrieren

Source 2: http://www.aim-dtp.net/aim/evaluation/cdg/cdg.htm

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24 display Quake 3 session…

It’s not the cutest… but holy moly!!

“The system is driven by 12 linux servers (2 monitors per server) using Distributed Multihead X (DMX) and Chromium. Chromium distributes the OpenGL rendering from the head node to all of the servers. The game runs fairly fast, though some lighting effects had to be turned off and Chromium is having some trouble with the mouse.”

Source: hackinthebox

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Martin Pointed Me To This Promising Company Which Is Out There To Bring Us Great Portale Media Playersbut At The Moment

Martin pointed me to this promising company which is out there to bring us great Portale Media Players…but at the moment… no real information is available on their website…but the start is done…international blogging…good way to start…


Source: http://www.venzero.com

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finally 10 hours on battery possible…


Oh yeah. It was time to replace the worn out battery of my notebook (HP compaq nc8000) and replace it with a shiny new one. And since I want as much wireless time as possible I ordered a new multibay battery with it. Everything arrived today and: god is that awesome!



My nc8000 now actually does the 10 hour long run with the two batteries fully loaded…hurray!

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has the XBOX 360 self-destruct integrated circuit?


Rumors and more rumors about the IBM eFuse circuits in the XBOX 360 CPU… Funny if it’s true and I can think of funny things to do with the CPU when modding is detected… B-)



(IBM)


“Some may say that I should strap on my tin foil hat, but in fact VID data is stored in the eFuses, it may be possible to shut power off to the CPU permanently or increase the core supply to the point of self-destruct.

Remember that VID “111111” or “111110” (VID order 4,3,2,1,0,5) indicated “NO CPU” therefore no supply power to the core.

This is just one possible scenario and may give new meaning to “FRAG your opponent”.


Source 1: XBOX CPU Design
Source 2: http://www.google.de/search?hl=de&q=efuse+IBM
Source 3: http://www.xbox-scene.com/tech-info-xbox360.php

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a reason why I should get a Nintendo DS…


That looks like the first serious Super Mario Brothers game for years…



And if it’s true what I’ve seen in some gameplay movies… I really really would like to play it.

1 Comment

Online Collaboration

Still in the testing phase the instructables step-by-step how-tos are quite a good concept for online collaboration….

Instructables is a venue for showing what you make and how others can make it.

Making things is part of being human. Whether you make bikes, kites, food, clothing, protocols for biology research, or hack consumer electronics, good instructions are critical.

Instructables is a step-by-step collaboration system that helps you record and share your projects with a mixture of images, text, ingredient lists, CAD files, and more. We hope to make documentation simple and fast. Show your colleagues how to operate a machine, show your friends how to build a kayak, show the world how to make cool stuff.

Source: http://www.instructables.com

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Smart Remote Control – Nachtrag

Konvergenz der Medien und insbesondere Konvergenz der Fernbedienungen sind an sich tolle Sachen – solange man nicht den Überblick verliert.


Da wundere ich mich, wieso die Fernbedienung zu meinem DVD-Player Marke Thompson DTH212 nur auf ein paar Tasten reagiert, den Großteil meiner Eingaben jedoch ignoriert. Ein Blick ins Handbuch verriet die Lösung: Die Fernbedienung war nicht auf den DVD-Player “parametrisiert”, sondern auf den Fernseher.


Hm, immerhin gab es ein Handbuch zum Nachschlagen…


Jens Heymann

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vintage console fun

What a great idea of maednes to bring his old NES console for a quick game. Since he also brought most of the best games that ever were releases for the NES (Dynablaster, SMB1,SMB3,…) fun was guaranteed.

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I want one of those Q-WUXGA

Since my girlfriend has a brand new 1440×1050 notebook display it’s hard to ignore that 19″a 1280×1024 are not the highest possible dpi to have… and as a matter of fact I really want to have some more DPIs on my 19″ TFTs…

Take a look at this schematic:



As you can see, SXGA is quite Low-End these days 🙂 But we have to wait before the manufactures get serious with their 200 DPI displays…

Source: http://www.theinquirer.net/?article=29655

2 Comments

what about those powerful weapon-grade lasers?

It seems they are selling them again… OMG!



You’ve read it some months ago… there is


Source 1: http://www.wickedlasers.com/
Source 2: more laser!
Source 3: and I shall call it “Laser”
Source 4: you provide the laser. I provide the wireless LAN

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the best time widget for your Mac…


WOW! Why didn’t we think of that?


1 Comment

the official FeM coffee cup


It arrived and it’s beautiful. I just bought two of them today… maybe more in the next days…



I personally really like the iced look of them…

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LED throwies…or: How to add color to your neighborhood

“LED Throwies are an inexpensive way to add color to any ferromagnetic surface in your neighborhood. A Throwie consists of a lithium battery, a 10mm diffused LED and a rare-earth magnet taped together. Throw it up high and in quantity to impress your friends and city officials.”



Beside the list of the needed parts you can even watch a video of the throwies, beautifying some-ones neighborhood:



Source: http://www.instructables.com/ex/i/7DBB34EAEDFF1028A1FC001143E7E506/

2 Comments

what happened last night…


I really really hate those moments. This morning around 0100 AM the server that hosts schrankmonster and some more websites crashed after more than 200 days of flawless operation. I arrived at the server room at around 2 and rebooted the machine – but it did not boot – instead it kept rebooting and rebooting…



I turned it off and decided to come back after some hours of sleep with fresh diagnose software and a just-in-case operating system install cd…


Well I turned the machine on, booted into memtest86 and no errors were found… I rebooted and voilá – the machine came up and everything worked.


What the hell was that? 🙁 Any hints? (no there is nothing of interest in the system event logs)

2 Comments

ridiculous speed, light speed, wire speed….

Did you ever wonder how fast data is actually travelling on the wires that come out of your machines? So take a look at this diagram to find out:



Source: http://blogs.msdn.com/mswanson/archive/2006/02/14/531645.aspx

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house automation to the max.

So here we are: We got a EIB bus in our office and thought: Oh well – that’s something to play with. But this guy wired and automated his complete house.

I cannot even imagine what information he is getting from “toilet flushed 3 times today”…but hey – why not 🙂



Source: http://www.bwired.nl

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uhh, so the Intel Yonah comes with 64-bit?!… that’s news!

We all know that some of the newer Pentium 4 processors have the EMT64 extensions – which are just the licensed AMD64 commandsets poorly emulated by the Intel processor.



Now the news came up that the current “Intel Core Duo” Chip – whose codename is “Yonah” also has such a EMT64 extensions. That would make it quite interesting to see how some of the 64 bit operating systems perform on the chip…I doubt it would be faster than the 32 bit – but at least more features means more fun for the geek.

Source: Intel Yonah hidden features exposed

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RSA SecurID undressed

We had a project which used the RSA SecurID token for authentication. But that was more than a year ago. Now what’s left are several unused token which are free for some fun…



“Your RSA SecurID token contains delicate and sophisticated instrumentation. The token casing, LCD and silicon chip will break if abused. Protect your RSA SecurID token from phyiscal abuse. Do not immerse it in liquids, do not expose it to extreme temperatures, and do not put it under pressure or bend it.” (RSA SecurID manual)


Let’s bend it, put it under pressure, expose it to extreme temperatures and liquids. Let’s physical abuse it so that it breaks…



in the beginning…



contact pads… interesting…



the backside opened



the front side opened



the “core”…



in all it’s beauty



more black foam under the LCD…


Source: http://www.rsasecurity.com/node.asp?id=1156

1 Comment

3 more terabytes please…


So here we are with another Promise VTrak m500i and another 14 250 GByte drives…


This time it seems that everything is working – even the DHCP request did not result in a complete crash of the appliance…




This time we won’t use the complete 3.1 Tbyte storage space as one humongous volume. This time the m500i serves as a boot-up platform for several XEN powered virtual machines.


And for that purpose 3 Tbyte should do it. If we have the time (since this particular m500i is planned to go into production very soon) we will test how it will work together with the already existing m500i. If we don’t have the time – we have to wait for the other m500i that is to be ordered…


Source: more info about the “m500i-odysee”

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bubblegum has now 3 cpus…hurray!

After several months bubblegum ran only with one of four possible cpus – mainly because I did not have the right voltage regulator modules for the P3 XEONs. But now I actually got some on eBay and today was the “will-it-work?”-day.



YES! It works. So one more to go…

2 Comments

it’s dead… obviosly a Xbox can swim…



oh dear, what a mess.


Source: kotaku

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pong clock


It’s from the category: Geek Toys.


This is going to be our brand new clock in the office. While the computer is playing pong against itself the scoreboard shows the time…



Source: http://www.burovormkrijgers.nl/index1.html

1 Comment

one multi-monitor idea implemented: Synergy2

So nearly a year ago I wrote about my multi-monitor ideas. And after that article a reader commented that there is a software called “Synergy” – which is just perfect solving at least three of my demands on a perfect multi-monitor working environment:

  • use ONE keyboard+mouse – regardless how many machines I want to control
  • I want to copy-paste across the machines – clipboard sharing!
  • platform independent – I’ve got at least one Mac, one Windows and one Linux I want to control


So here it is. And it’s working like a champ. To make it more clear what I am talking about I made a short movie for you:



click to watch

And all this with just a small text config file that tells synergy2 which machine is next to which one…

You can get this video also via our podcast rss feed.

Source: http://synergy2.sourceforge.net/

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SD-card slot TV-Tuner (SDIO) available soon…


I could imagine some uses for this. It’s a tv (pal/ntsc) tuner for Windows Mobile devices (Pocket PC 2002-WM5) and it’s got some quite interesting specs.


The 1200mAh battery that comes with the tuner only stays 2.5 hours and it’s only got a maximum framerate of 20 fps – but that’s for the bad news. It’s finally a tv tuner for your mobile gadget!!!



Source: http://www.eopstech.com/eops/pro3.html

1 Comment