Connect to Oxford Eduroam on Linux#

The official guide and cat.eduroam.org both fails to provide a working Wi-Fi configuration on Linux and it took me a couple of ours to make it.

This guide assumes NetworkManager. It should work on any linux but I only did this with NixOS 26 KDE.

Steps#

Create the separate Wi-Fi password on the university website . This step is the same across all platforms.
Connect to eduroam in the NetworkManager GUI. A dialog should pop up.
Go to the Wi-Fi tab.
Set the mode to Infrastructure .
Set security to WPA2/WPA3 Enterprise and identity verification to PEAP .
Set PEAP version to automatic and inner authentication to MSCHAPv2 .
Use the university SSO (like abcd1234@OX.AC.UK , note the capitalization ) for username and the password created in step 1.
Set domain to OX.AC.UK .

If everything goes well we should be connected.

Do not configure an anonymous identity.
Do not download and select the certificate from university website, even though the official guide tells you to do so . Leave it blank.
It is weird but the Wi-Fi username is indeed case-sensitive , both the local part and the domain part.