Why does anaconda get access Denied to Remote Resource while installation?

Issue

• For network installation of Red Hat Enterprise Linux 6, the following URL was used.

ftp://root:redhat@192.168.0.254/srv/rhel64/

• The following errors appear on console.

18:05:55,290 INFO    : transferring ftp://root:redhat@192.168.0.254/srv/rhel64/images/updates.img                                                           
18:05:55,400 ERROR   : Error downloading ftp://root:redhat@192.168.0.254/srv/rhel64/images/updates.img: Access denied to remote resource                    
18:05:55,410 INFO    : transferring ftp://root:redhat@192.168.0.254/srv/rhel64/images/product.img                                                           
WARNING loader: error -2147483630 reading header: cpio: read failed - Success   
18:05:55,518 ERROR   : Error downloading ftp://root:redhat@192.168.0.254/srv/rhel64/images/product.img: Access denied to remote resource                    
18:05:55,528 INFO    : transferring ftp://root:redhat@192.168.0.254/srv/rhel64/images/install.img                                                           
18:05:55,633 ERROR   : Error downloading ftp://root:redhat@192.168.0.254/srv/rhel64/images/install.img: Access denied to remote resource   

• What can be the problem. The Firewall port is already opened for FTP transfer and connection.