1) yum install vsftpd
2) vim /etc/vsftpd/vsftpd.conf
change :
listen=NO
listen_ipv6= YES
For anonymous upload/dwnload
anon_mkdir_write_enable= YES
anon_other_write_enable= YES
anon_upload_enable= YES
3) service vsftpd start
4) Default path for upload /download directory
/var/ftp/
5) The Linux native client (ftp) does not support IPv6, so use "lftp" to test the server.
6) Windows 7/ Windows 2008 Server ftp client will work so you can use "ftp ipv4/ipv6" command.