To configure a wireless network, download the certificate and install it.
DigiCert Assured ID Root CA
Click the wireless icon on the taskbar and choose Connect to another network…
Enter eduroam as the network name and WPA2 Enterprise security.
Enter login details here, i.e. the username together with @eduroam.ue.katowice.pl or the one you use to log in to the Google Apps service (e.g. first firstname.lastname@example.org). If you have a WLAN_AE access account, enter your current login details.
If you do not have a password for the WI-FI network, create one by clicking HERE choosing the right domain.
In the following step choose Show certificate,
Choose the DigiCert Assured ID Root CA certificate and continue,
Following saving all configurations, you have been connected to the eduroam network.