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Table of Contents
eduroam mit Android
In order to ensure a secure eduroam configuration, it is strongly recommended that you set up eduroam via the CAT app using the configuration wizard (CAT tool)!
Notice when changing the password of your GWDG account:
If you change your password for your GWDG account after setting up the eduroam profile, the password must also be changed on your Android device. Otherwise the network connection cannot be established.
Setting up the eduroam with the CAT tool
1. The configuration wizard (CAT app) is required to ensure secure configuration. This can be obtained from the Google PlayStore. Please pay attention to the provider information “GÉANT Association”. Alternatively, you can download APK directly from DFN.
2. After you have installed the “eduroamCAT App”, open the app and select the eduroam profile for the University of Göttingen and GWDG. If your institute has set up its own profile file on the “GÉANT Association” page, use it.
3.1. If the location service is activated in your telephone and you are currently in Goettingen, the GWDG Goettingen should be displayed on the start page of the app under “Nearby Configs”. Alternatively, you can enter the GWDG Goettingen in the app on the start page via “Manual Search”. Please select GWDG Goettingen now. A summary of the configuration file will now appear. To install, press the “Install” button.
3.2. Another possibility is to download the profile file from the download page via a direct link here. After downloading via the button, select your institute from the “Organisation” menu. For eduroam users with a GWDG account, the organization is called GWDG Göttingen. Then use the button to select the desired Android version.
4. Confirm with “Yes” that you want to install the profile.
5. Then enter your username and password. Use the username according to the table Username in the Username section of this article. Then continue with “Install”.
6. Finally, the device settings for the installed profile are displayed.
Manual eduroam configuration
Please use the CAT-App to ensure a secure configuration!
Only perform the manual configuration if it is not possible to configure an eduroam connection using CAT (Configuration Assistant Tool). These instructions show how to configure the Android OS release mobile device settings to establish eduroam connection manually.
Instructions for installing the root certificate for WLAN use
In order to establish a secure connection with eduroam, it is necessary to have the root certificate loaded and installed. Although the certificate is already included in Android, it is used by default only for VPN and applications, but not for Wi-Fi. For this purpose it must be reinstalled. Make sure you have set up an Internet connection by going to the Settings under “Wireless & networks” and selecting “Wi-Fi” or “Mobile data”. Please note cellular data may cause additional costs depending on your provider.
You can download the current root certificate for „T-Telesec Global Root Class 2“ (valid until Oktober 1, 2033) using following link and then install it on your device.
A link is also available at android.gwdg.de in the category “Schnellzugriff” → “Root-Zertifikat herunterladen”. Alternatively, you can first download * .crt file to your PC and then transfer the file using e.g. USB cable to your Android device.
Now you are ready to install the CA certificate on your device. Go to the download folder in the file manager (Explorer) and tap the certificate file. If you have no screenlock set so far, you will be prompted to set up a trusted screenlock for your device. The system will redirect you to the device's security settings for setting up a screenlock. In the “Name the Certificate” dialog, you assign a name to the certificate. For the eduroam connection, select Wi-Fi or WLAN. For apps and VPN connections, select VPN and Apps. Finally, tap OK.
CA certificate Installation using Barcode Scanner
Select the QR Scanner or Barcode Scanner App from your device. If you do not have a Barcode scanner on your device, you can install it via Play Store. Scan one of the following QR codes and open the detected link in browser.
Install the certificate file by choosing the name and purpose. After confirming your entries, you will receive a pop-up message indicating that the certificate has been successfully installed.
Note when deleting a WLAN profile
The root certificate must be reinstalled after deleting a wireless profile that used the certificate. Please note that for some Android devices it is not possible to reuse a name that has already been assigned. If necessary, delete an existing eduroam Wi-Fi profile in order to properly configure the certificate verification. To delete or edit a Wi-Fi profile, tap and hold on the existing Wi-Fi profile and select the option to remove from the context menu.
Manual eduroam configuration guide
Please note that the menu navigation of different Android devices (depending on the manufacturer) may differ slightly.
If you are in the reception area of the eduroam WLAN network, tap → Settings → Connections → Wi-Fi to select the eduroam network. To display the available networks, your Wi-Fi must be activated. In a new window, you will be prompted to enter the eduroam configuration parameters (see eduroam configuration table).
The screenshot for the network settings shows the login data for a GWDG account as an example. As “Identity” enter your username according to the table in the section Username. Please enter firstname.lastname@example.org as “Anonymous identity”. Some Android devices expect the domain to be entered. Please enter eduroam.gwdg.de here. Once the correct information has been entered and confirmed, the connection to the eduroam Wi-Fi network is established permanently.
If you are out of range of the eduroam Wi-Fi network, you can set up eduroam manually via → Settings → Connections → Wi-Fi → Add network. In the window that opens, you will be asked to enter the eduroam configuration parameters (see also the screenshot for the network settings).
eduroam configuration table
| Network name |
(please type in using lowercase)
| CA certificate |
(see Root certificate)
| T-Telesec Global Root Class 2 |
(valid until Oktober 1, 2033)
| Identity |
(see section Username)
| Anonymous identity ||email@example.com|
|Password||The same password as you use for logging into the GWDG portal. You can tick “Show password” checkbox, if you wish to check the password is entered correctly.|
Update the Wi-Fi password after changing the GWDG account password
Note: Update your WiFi password on your Android device after changing password for your account. If you have changed the password or entered an incorrect one, an “authentication problem” will occur. To do this, navigate to “eduroam” as described above. Tap and hold the saved network eduroam to delete or change connection settings. Select “Manage network settings”.
Storage of the Wi-Fi password
Android devices offer the backup of data at Google. This allows extensive personal data, including the WLAN password, to be stored unencrypted on Google servers. This function is activated by default in a Google account that has been set up.
According to the university's password policy, passwords may not be passed on to third parties. Therefore this option must not be activated when using the GWDG identifier for eduroam. You can deactivate this option in the Anroid settings.
According to the university's password policy , passwords may not be passed on to third parties. Therefore this option must not be activated when using the GWDG identifier for eduroam. You can deactivate this option in the Anroid settings.
As an alternative backup solution can be e.g. the App Helium may be used (check German article in “GWDG-Nachrichten” Helium Backup für Android ). The App Helium does not require system route and can backup data encrypted.