First you need to know what type of authentication you need. You can lookup the user/password from the passwd/shadow files, you can set a plain-text 'users' file, you can look this information on a sql table, or even inside a ldap server (which I would not recommend for a newbie on radius, as I see so many people having trouble with this kind of authentication). The 'users' file should be the better choice for you to start on radius...
>I have installed free radius in RH 7.1 and how can i able to check for user name and >password . how can i able to login inside the radius Server. please let me know about that - List info/subscribe/unsubscribe? See http://www.freeradius.org/list/users.html
