IT Center Blog

Schlagwort: ‘WLAN’

IT Fairytale Hour – Part 2

September 25th, 2023 | by
Animated woman woman looking through a magnifying glass comparing myths with facts.

Source: Freepik

Today we continue with our series, “All about the myths in the world of IT”.
If you missed the first part of the myths, feel free to check out our last post.

“The full moon causes sleepless nights” – a myth we all know. Experts have long since proven that the moon does not have magical powers. The brightness releases less melatonin in the brain, which helps us fall asleep.
So it’s worth taking another close look at widespread half-truths.

In the world of IT, there are myths that we can get to the bottom of together.
Today, it’s all about IT security and what you should know about it.


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WiFi News – Part 3: New Root, Old WiFi

June 30th, 2023 | by
Router, notepad, and smartphone

Source: Freepik

On May 23, 2023, the server certificate of our authentication server “” had expired. For that reason a new certificate was implemented in the system. In the first post of this blog series we informed you about this.

Now a larger change is coming up: In the future, the new certification instance GÉANT/TCS will be used and replace DFN-PKI Global. As a consequence a new Radius certificate and certification chain will be used. This migration will take place on August 1, 2023.

Eduroam will be affected with regard to registration and configuration. The exact background and what you have to do, to continue using eduroam, we will explain in the following blog post. Read the rest of this entry »

WLAN News – Part 2: eduroam and certificates

June 16th, 2023 | by
Top view of the Wifi icon

Source: Freepik

The Wi-Fi network eduroam is available on the entire campus of the RWTH Aachen University. If you have already configured eduroam on your mobile devices and chosen an automatic connection, your devices will connect to eduroam in the background. This happens as soon as your devices detect a network with the name eduroam in the vicinity.

Behind a secure connection to eduroam lie certificate structures that guarantee this security. But how exactly do these processes work? In the following blog post, we hope to provide answers to these and other questions.

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WiFi News – Part 1: New Certificate for the RADIUS Server

May 17th, 2023 | by
Front view of smartphone and WiFi router

Source: Freepik

For the expiration of the server certificate of our authentication server the certificate on the system will be exchanged on May 23, 2023. This has already been announced in the status message portal.

You will be affected by these changes the next time you log in to eduroam. What you have to do to continue using the WiFi, we explain in the following blog post.

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New SSID – RWTH institutes – in the WLAN

December 16th, 2022 | by

RWTH Aachen University offers wireless data communication (via WLAN) to all WLAN enabled devices throughout the university. This WLAN service is offered by WLAN access points.

Wifi Logo

Source: Freepik

These access points broadcast one or more SSID’s, which the devices can connect with and thus get internet access. The term SSID stands for Service Set Identifier and is simply the name of a WLAN network. RWTH offers many SSID’s such as:

  • eduroam for students, employees and guests of participating institutes
  • RWTH-guests for quests without an eduroam identification
  • RWTH-devices for IoT devices, e.g. measuring instruments and sensors

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