Tech blog, projects and tutorials

Web Engineering, Mobile, IoT and DevOps (incl. virtualization)

/Tech blog, projects and tutorials/

Let’s Encrypt is Trusted

Let´s encryptMit dem 19. Oktober werden die Zertifikate von Let´s Encrypt nun in allen wichtigen Browsern als vertrauenswürdig akzeptiert. Damit ist der Grundstein gelegt um eine weite Verbreitung finden zu können. Einige Jahre lang verwende ich nun schon Zertifikate von Startssl oder aber CAcert. Leider haben sich die Anbieter nie wirklich etablieren können. Mit Let´s Encrypt sehe [...]

2019-01-03T16:46:58+01:00Tags: , , , , |

Die ARD und ZDF – Onlinestudie 2015 und die digitale Kluft

Zum 12.10.2015 haben ARD und ZDF eine neue Version der seit dem Jahr 1997 publizierten Online-Studie auf der Internetseite ard-zdf-onlinestudie.de bereit gestellt. In der Pressemitteilung von ARD und ZDF heißt es: "Die Anzahl derer, die das Internet täglich nutzen, ist 2015 um 3,5 auf 44,5 Millionen (63%) gestiegen. Zugenommen hat auch die Unterwegsnutzung: mittlerweile greifen 30,7 Millionen (55%) [...]

2019-01-03T16:46:59+01:00Tags: , , , , , , , , |

Updating Amazon AWS Security Group via CLI

When there is need often to log in to your AWS hosted EC2 instance, and you care at least a bit about security, one will need to update the Security Group "Inbound rules" to allows SSH connection from your current IP address to your Amazon AWS hosted server. You have two option to do so: [...]

2019-01-03T16:46:59+01:00Tags: , , , , |

Chocolatey

I lately stumpled upon "Chocolatey", that is according to its developers, "kind of like apt-get, but for Windows". Chocolatey makes use of the Windows powershell and is very easy to use. It is worth to get more into it.  I used it so far to automate the installation of Vagrant based Windows Virtual machines and to [...]

2019-01-03T16:46:59+01:00Tags: , , , |

Vagrant behind a proxy server

If you are using Vagrant behind a proxy server, you should go for installation of vagrant-proxyconf. But how to install this plug-in when you are currently limited by a proxy? Set your proxy on Windows, open a command prompt and enter: set HTTP_PROXY=http://user:password@proxy.domain.tld:8080 set HTTPS_PROXY=https://user:password@proxy.domain.tld:8081 Set your proxy on Linux, open a command prompt and enter: [...]

2015-10-12T00:53:54+01:00Tags: , , |

Holistic blended framework for Research and Education in Mechatronics and Computer Science

  “If real is what you can feel, smell, taste and see, then ’real’ is simply electrical signals interpreted by your brain” Laurence Fishburne, The Matrix, 1999   The 'Holistic blended framework for Research and Education in Mechatronics and Computer Science' (BLC) consists of a technical and a didactical part. These parts are accompanied by those [...]

Getting started with Polymer 1.1.0 – Part 3

This post is a follow-up to Getting started with Polymer 1.1.0 - Part 1 and Part 2 and will continue with the implementation of more Polymer web component into the app. Google Cards The CardView  has been added to Android with API level 21 that corresponds to Android 5.0. CardViews extends the FrameLayout  class and lets you show information inside cards [...]

Google AdSense Experiment

Starting from today I am experimenting with Google AdSense. I added two different ad units to my pages. One is now placed in the right side bar of the blog pages and another one right after the content of the blog posts, before the comment box. I will now just leave this experiment lasting for [...]

2019-01-03T16:47:00+01:00Tags: , , |

Getting started with Polymer 1.1.0 – Part 2

This post is a follow-up to Getting started with Polymer 1.1.0 - Part 1 and will continue with the implementation of so called "paper components". The paper component library belongs to Polymer and is implementing Google Material Design. This component library will be utilized for the app we are building. First we are importing the necessary elements to display [...]

Getting started with Polymer 1.1.0

I just took a short insight look to the Polymer 1.1.0 library, that replaces the shadow DOM polyfill with a shim that is far more lightweighted than it was before in the old 0.5.0 version. Polymer is build for modern web browsers and makes use of the popular web components. To be honest I started with [...]