Reconfigure ftp and tftp

# create ftp symbolic link
cd /var/ftp/pub
ln -s /AT AT
# verify symbolic created.
ll
http://www.wikihow.com/Set-up-an-FTP-Server-in-Ubuntu-Linux
Change the configuration file. Get to the file browser and type /etc. Next scroll down and double click on a file called vsftpd.conf.
Remember that lines that start with a '#' are commented out: 
Disable anonymous access: Change the "anonymous_enable" setting to NO
Change the "local_enable" setting to YES.
3Restart the FTP server to enable your changes: in a shell window, type: sudo /etc/init.d/vsftpd restart

# setup tftp
http://www.webune.com/forums/how-to-install-tftp-server-in-linux.html
vi /etc/xinetd.d/tftp
        server_args             = -s /tftpboot
        disable                 = no
# restart tftp service
/sbin/service xinetd start