eduroam stands for education roaming and is an international cooperation between universities. It provides researchers, teachers and students easy and secure network access at the home university and when visiting an institution other than their own - with no changes to the computers configuration.
You can read more about eduroam here.
1) You will need a special network secret to login to KTH's wireless network. You cannot use the password you have for your ordinary KTH.SE login.
• When you enter your username and network secret be sure not to add any leading or trailing whitespace. Your login to eduroam will fail otherwise.
The CAT tool is available for Windows, MacOS X, Linux, iOS devices (e.g. iPhone, iPad) and Android (4.3 and above)
Go to the eduroam Configuration Assistant Tool (CAT).
The right installer shows up, click on it and follow the instructions. For more information, click on the blue i- button.