2 questions:right redircet after login and radius slow reject

[famigliagovi at libero.it]

hi guys,i have two questions:

1-when a client connects to my login page then 
he hasn't been redirect correctly to the internet page written before.what i 
have to do?i want that a client who write www.abc.it goes automatically on this 
page after login

2- when a client put wrong credentials radius server takes a 
long time to display login failed page

thanks 
marco