Michel
24. February 2015
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Happy Sysadmin Day!
Today we celebrate our yearly sysadmin day! :) I wish all of you a nice day and a happy start into the weekend!!! Today I
Michel
25. July 2014
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tcping.exe – ping over a tcp connection
Several days ago I found a nice tool for testing tcp ports from windows command shell. In the past I used “telnet IP tcp-portnumber”, when
Michel
23. July 2014
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ICMPv6 ‘Multicast Listener Report’ flooding the network
Today I had a very big network problem! Since 4 o’clock a customer told us, that the network printers aren’t available and a wireless link to
Michel
16. July 2014
4 Comments
Passed the IUWNE 640-722 Exam :)))
Phew… I finally passed the IUWNE 640-722 for CCNA Wireless. I was a little bit shocked with my score of 1000/1000 ^o^
Michel
16. May 2014
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Making the CCNA Wireless
I’m currently at Fast Lane Training Center in Hamburg in the “Implementing Cisco Unified Wireless Network Essential (IUWNE)” Course. Very interesting facts about modulations and
Michel
6. May 2014
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Web Protection – New categorization of websites
If you have a website that is in case of false positive categorized as “Malicious Site” or a wrong category, you can open a support
Michel
27. February 2014
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Happy System Administrator Appreciation Day!
Today we celebrate the 14th annual of the System Administrator Appreciation Day! Dear boss, can you bring me the following things for a happy SysAdmin
Michel
26. July 2013
1 Comment
The problems with asymmetric routing
Happy Saturday to all of you! I made some thoughts about the topic asymmetric routing. When I make network audits to new customers I often see
Michel
23. March 2013
10 Comments
Finally done the exam!
Phew… finally done and passed my exam to Sophos Certified UTM Architect :-) now I will practice more with Linux-Shell commands and deeper troubleshooting of
Michel
4. January 2013
1 Comment
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