There is a script that creates automatically a system-wide profile for eduroam.

• eduroam installer: eduroam CAT (Configuration Assistant Tool)
  

Alternatively eduroam can also be set manually:
To configure the eduroam network the root certificate of the Deutsche Telekom is required. This is usually preinstalled on Ubuntu. Otherwise the certificate can be downloaded from the DFN site Download T-TeleSec GlobalRoot Class 2 (right click ⇒ Save link as...).

Choose eduroam from the list of available wireless networks and enter the following information:

• Wi-Fi security: WPA- & WPA2-Enterprise
• Authentication: Tunneled TLS (TTLS)
• Anonymous identity: eduroam@tuhh.de
• Domain: rz.tuhh.de
• CA certificate: DFN-Verein Community Root CA 2022
  Download Wurzelzertifikat dfn-verein_community_root_ca_2022.pem
• Inner authentication: PAP
• Username: TUHH account
• Password: TUHH password