NFC Radio

Was wird benötigt Raspberry Pi Hifiberry AMP oder Justboom AMP zwei Boxen MFRC522 NFC Reader TTP223 Schalter NFC Karten / Sticker oder sonstiger ein Gehäuse damit alles schön aussieht vielleicht noch ein paar LED’s Grundinstallation Raspian installieren JustBoom aufstecken und konfigurieren Boxen an Justboom anschließen mit etcher kann man das Image leicht auf eine SD Karte flashen […]

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OpenSSL CSR in Linux

Because I won’t remember this in a few weeks time I will just document how to get a basic CSR in Linux with OpenSSL. Let’s create a certificate template with all necessary fields Now we need the RSA key With this key and the template we create the CSR And because we love security let’s […]

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Wireless Location Analytics with CMX and Splunk

I’ve spent a lot of my time lately with wireless location analytics for different purposes. Initially it was triggered through a customer request and now it’s more or less my current main topic at work. In order to get started within the Cisco ecosystem a CMX or at least MSE is required and of course […]

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It’s done… Es ist vollbracht… CCIE Wireless #57157

I’ve spent a lot of hours and even my (and my families) annual holidays learning for the CCIE Wireless exam and took the lab on 29.09.2017 in Brussels. Today – a lot of hours waiting – I finally got the long awaited email saying to check my lab score. With shaking hands I tried opening […]

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Simple Dot1x Port Authentication with IBNS2.0

Cisco came up with a more flexible style of Dot1x port authentications in order to build more complex Methods specially for BYOD in mind. They took the concepts of policy-maps and classes in order to build these new rule sets. So until now I’ve configured every dot1x port for authentication similiar to this example


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Cisco Converged Access Called-Station-Id

While doing my studies and fooling around with the 3850 in my lab I stumbled upon a strange thing in regards to CWA with the Cisco Converged Access platform. On the AirOS WLCs there is an option to set the format of the Called-Station-Id so that you can match with ISE on the SSID Name. […]

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802.1x QoS Marking fehlt

Beim Lesen von CUWSS Quick Reference Guide bin ich auf beim Capwap QoS etwas hellhoerig geworden. Laut Jerome Henry ist folgendes QoS Verhalten bei APs zu beobachten: Capwap Data Traffic –> WLAN QoS (central switched oder APs im local mode) Capwap Data Traffic 802.1x –> CS4 (local mode APs und FlexConnect APs) Capwap Control Traffic […]

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Capwap AP Discovery Timer

Habt ihr euch je gefragt wie oft ein Flexconnect AP im standalone mode versucht seinen WLC zu erreichen? Die Logs auf dem AP sind wenig aufschlussreich um eine Regelmaessigkeit fest zu stellen, aber ein Sniffer trace bringt die richtige Spur 🙂 Am WLC kann das mit folgendem Befehl angesehen und ggf. veraendert werden:

Enjoy […]

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