Membership access role not working for Root directory

 hi,
 
    i have application that dont have any sub folder on it,i have the files only in door directory
 
for this appliaction i am implemention membership access role ,only if user logged in they can access the remaining pages.
but in my case if i enter the page name in address bar with out logged in that page get calling but this shold not happen know
 
if i enter the page name with out logged in ,it should redirect to login page 
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