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Interconnecting Cisco Networking Devices, Part 1 (ICND1)
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Read MoreThe Krack hack – is it the end of the world, or worse, is WPA2 dead?
The Krack hack – is it the end of the world, or worse, is WPA2 dead? So here we go… I recently read rather a lot of articles entitled “WPA2 is dead” or “The end of wireless security” and so on, online, and actually saw stuff on the news (TV news channels). What happened then?…
Read MoreTracking sequence numbers and flags in Wireshark
Tracking sequence numbers and flags in Wireshark One of the things I learned a while back was a really good tip when using Wireshark. I find people sometimes get tied up tracking the sequence numbers and the wireless frame flags in Wireshark. Having to open the frames and look for flags and following sequence numbers…
Read MoreHomer and Bart and WiFi
I find myself explaining layer 1 physical spectrum analysis quite a lot these days. Spectrum Analysis is everywhere today. There is Cisco Spectrum Expert, and CleanAir (now the chip is installed in every Enterprise Cisco AP). There is also Metageek Chanalyzer, and of course Cisco Meraki has it built in. Identifying the different signals can…
Read MoreAn easy way to remember V and H
V and H – An easy way to remember Short blog entry this month but, I hope, quite an important one because I want to give you . This month I want to give you an easy to remember tip, concerning antenna coverage pattern charts. Directionality of antennas is quite important. When planning a design,…
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