Which model should support this network?
nothing like that, I added a screenshot to make it clearer under Android. You basically connect to a wifi network with ESSID "WOW FI Fastweb" and set the authentication method as PEAP and then the username and password (the identity field seems not required).
From there you can visit any website just like you were connected to your home wifi.
While not having done this myself to test, here is an article of interest using a M series Nanostation.
Skip to the bottom where the station configuration is discussed.