Jens’ BLOG

You can find the slides (in German) here.

And yet another history book. “Where Wizards Stay Up Late: The Origins Of The Internet” by Katie Hafner is a great book about the early history of the internet.
You’ll learn how things started and why some things are the way they are.

ISBN-13: 978-0684832678

(Buy at Amazon.de)

1. Do not offer help for free ever again!
2. Only speak at conferences where the network is IPv6 enabled.

I’ll be giving a three hour Wireshark tutorial and a 1hour presentation about check_mk (and some other Icinga / Nagios related tools) at this years FrOSCon on August 25th and 26th. Both are in German. The tutorial is at a beginner level and hands on. So bring your own notebook. I’ll also explain some other network troubleshooting techniques.

Yes there was a time before the Internet. And people were able to communicate. In his book “The Victorian Internet” Tom Standage describes the history of the Internet before the Internet: The telegraph network. I realy enjoyed reading this book (ISBN-13: 978-0802716040).

(Buy at Amazon.de)

If you need some inspiration on how to draw your network diagram take a look at Rate my network diagram.

Well maybe some of those diagrams are an example on how not to draw network diagrams.

(Thanks Florian)

and I don’t have to go outside to notice it. Some time ago I bought some 1-wire sensors and a 1-Wire to Ethernet Server.

This week I finally found the time to add them to my monitoring system using thisplugin .

Using check_mk and mrpe integrating the plugin was quite easy. I just had to add

TEMP-BL /usr/local/nagios-plugins/check_eds_tempprobe.py -H 1-wire -p 2 -w 26 -c 30

to the mrpe.cfg on my home server.

And I even get pictures:

Now I only have to cleanup my cabling and find a good position for the outside sensor.

Interesting article about IPv6 in South Africa. (Thanks Thorsten)