> > Thanks for yours reply > but now i want to do RADIUS for Web Authentication. > I want to my web site is secured and send an Authorization Required prompt to the end user. > After they enter the username and password , they can visit my web site, otherwise, return a Access Denied message.
even without radius, you can configure apache to prompt user name and password for user authentication. - List info/subscribe/unsubscribe? See http://www.freeradius.org/list/users.html

