What is Eduroam?
Eduroam is an abbreviation for Education Roaming. Using 802.1x security standards over a RADIUS-based infrastructure, it aims to enable users from eduroam member institutions to seamlessly access the network at other educational institutions. Users from eduroam member institutions are able to connect to the network at another eduroam member institution (Guest Institution) using the same username and password they use to connect to the network at their own institution (Host Institution). When a user sends a connection request to the eduroam broadcast at a guest institution, the authorization server of the guest institution redirects the user to that of their host institution to determine if they are authorized. These queries are made through an encrypted tunnel between the servers, preventing the username and password pairs from being accessed outside the user's home server. In this case, the only thing users need to do is configure the eduroam wireless network at their host institution as if they were connecting to the network via their own institution.
More information is available at http://www.eduroam.org and http://www.eduroam.org.tr.