I need your help!!!!

Hello Friends: I am writing to give me ideas on how to apply the following policy in freeradius: - I need a user is only registered at the same time just one time, so when the user is registered with that other users can not register. I hope I miss understand. Thank you very much. Fin a la injusticia, LIBERTAD AHORA A NUESTROS CINCO COMPATRIOTAS QUE SE ENCUENTRAN INJUSTAMENTE EN PRISIONES DE LOS EEUU! http://www.antiterroristas.cu http://justiciaparaloscinco.wordpress.com