its quite amazing to understand that some files work just the opposite wat it was intended once we change the labels...
i was referring to the FTP configuration file, some days back only i got the real usage of the user_list file..
first of all we need to enable FTP service to read the user_list file
userlist_deny=YES # means that the users inside the vsftpd.user_list are denied, which is the default
userlist_deny=NO # means that the users inside the vsftpd.user_list are only allowed to login via FTP
anyways.. nice to understand that even at this later stage...!?!!!