1. March 2017

Microsoft Azure IoT Hub MQTT device to device communication is not supported

Microsoft Azure provides IoT Hub. It might sound great because it has support for MQTT. It is very important to mention that Azure IoT Hub has a different way how it operates than Mosquitto which means that architecture of your IoT solution must be different.

Let’s check differences.

Default port:

  • Mosquitto is 1883 which is not secure, it is possible to enable TLS
  • IoT Hub 8883 secured by TLS/SSL (only)

Publishing and subscription of messages:

That’s a huge difference. In the case of Mosquitto you can easily build network of devices which can communicate together and management logic could be injected by Node-RED. In the case of IoT Hub whole interaction is managed by the cloud.

If you still want to play with IoT Hub and MQTT, I recommend article written by Satish Pagare who explains how to use mosquitto_sub and mosquitto_pub to interact with IoT Hub.

10. April 2014

Debian Heartbleed openssl bug remains even after upgrade of openssl package

If you’re using Debian and you want to get rid of Hearbleed bug then it’s not sufficient to upgrade openssl package.

The really important package is libssl1.0.0:

apt-get install libssl1.0.0

It will restart all services which depends on this package.

15. June 2012

What is YSoft SafeQ?

😀

You can find more  Y Soft videos at Youtube.

3. March 2012

Video – YSoft SafeQ 4 Launch Event in Prague

Check out cool videos from SafeQ 4 Launch Event in Prague.

http://youtu.be/0v93qTdb4tg

5. October 2011

EurOpen – Security in context of RIA apps

You can find here slides from my talk about security in context of RIA applications.

Conference EurOpen.czŽeliv. Slides are Slovak only.