Example Ubuntu 18/19 (pictures see bekow) - BSD see here

1. Switch on WLAN, display overview of existing WLAN networks
2. Select wlan_guests connect (if query comes: ' Public Network')
3. Open your browser - take note of certificate error messages and continue anyway (e.g. 'Continue loading this website'...)
4. If your browser does not automatically open the guest WLAN login page, please enter: idm.hs-nb.de
5. Click the button 'ACCESS EDUROAM'.
6. Follow the link 'Website eduroam.org
7. Pre-selected are 'The University of Applied Sciences Neubrandenburg' and your operating system Linux
8. Download file
9. Open terminal, start this file, enter data;
10. If necessary, briefly deactivate the WLAN -> activate; now you are connected to the WLAN eduroam :-)