How to setup a *secure* eduroam connection for University of Warsaw students on Linux

secure_eduroam.md

Introduction

This tutorial covers using NetworkManager with either wpa_supplicant or IWD backend. If you did not heard of IWD, it is propbable your NetworkManager uses wpa_supplicant.

wpa_supplicant

1. Edit connection and set:

• Authentication to Protected EAP (PEAP)
• Anonymous identity to [email protected]
• Domain to eduroam.uw.edu.pl
• CA certificate to file located at /etc/ssl/certs/Comodo_AAA_Services_root.pem
• Uncheck No CA certifcate is required
• PEAP version to Automatic
• Inner authentication to MSCHAPv2
• Username to your [email protected]
• Password to your CAS password

3. Connect to eduroam.

IWD

1. Create file /var/lib/iwd/eduroam.8021x with contents:

[Security]
EAP-Method=PEAP
[email protected]
EAP-PEAP-CACert=/etc/ssl/certs/Comodo_AAA_Services_root.pem
EAP-PEAP-Phase2-Method=MSCHAPV2
[email protected]
EAP-PEAP-Phase2-Password=
EAP-PEAP-ServerDomainMask=eduroam.uw.edu.pl

[Settings]
Autoconnect=true

Remember to change XXXXXXXXXXX to your PESEL and type your password in plain text after EAP-PEAP-Phase2-Password= e.g. EAP-PEAP-Phase2-Password=tajnehaslo

2. Connect to eduroam.

FAQ

Why /etc/ssl/certs/Comodo_AAA_Services_root.pem?

Because it is the certificate of the root CA in the UW's certificate chain. And wpa_supplicant accepts only a root CA's certificate i.e. fails with "self-signed certificate" error. IWD works with UW's certificate as well.