The official document does not contains the Linux-way, so I’m writing this note.
For Network-Manager users, just connect as it’s a regular PSA network.
Follow instructions from Arch wiki and Guide for Android users and you’ll have the following result.
#/var/lib/iwd/=4e5455542d3830322e3158.8021x
[Security]
EAP-Method=PEAP
EAP-PEAP-Phase2-Method=GTC
EAP-PEAP-Phase2-Identity= <Your nportal-account>
EAP-PEAP-Phase2-Password= <Your nportal-password>
[Settings]
AutoConnect= <If you want to connect automatically>