Change to the login for eduroam WiFi network
Are you returning to the university campus? When logging in to the wifi network eduroam, you now have to use your regular ULCN username (your student number), followed by @leidenuniv.nl. For example: if your ULCN name is 's1234567', use 'firstname.lastname@example.org' as your identity/user name.
With the addition @leidenuniv.nl, you now automatically connect to eduroam wifi networks from numerous educational institutions worldwide. All the data you send will be encrypted. Read more information on the wifi network and its safety here.