When a user tries to connec to eduroam, there appears a login window in which user can enter user-name and password information. After then, the entered information ( data ) is sent IYTE User Authentication Server ( RADIUS ). Radius server checks user domain. If user is a IYTE user, it checks the entered information with the one in local database and gives authentication if the data matches. Otherwise, it fails. If user domain is not a IYTE domain then it proxies the data to the ULAKBIM Authentication Server ( Federation RADIUS ). If the user domain is listed in its database then the request is sent to that Institute RADIUS server. Otherwise, it is sent Confederation RADIUS server which is loacted either in Europe region or in Asia-Pasific region. This procedure continues till finding the correct institute that user belongs to.