How to Configure TFTPD

How to setup TFTP server on Debian

Step 1: Installation of tftpd package (server) and client
aptitude install tftpd
aptitude install tftp

Step 2: Creating Directory and setting permission
mkdir /tftpboot
chmod 777 /tftpboot
chown imran.imran /tftpboot

Step 3: Checking and editing(if required) the /etc/inetd.conf
Correct the location of director from /srv/tftp to /tftpboot

tftp dgram udp wait nobody /usr/sbin/tcpd /usr/sbin/in.tftpd /tftpboot

Don't forget to restart.
It is is tricky to restart the tftpd, you have to restart inetd, but in Debian it is openbsd-inetd
cd /etc/init.d
./openbsd-inetd restart

Step 4: Testing
Type following
tftp 127.0.0.1
tftp>

Step 5: Security
you can edit /etc/hosts.allow and /etc/hosts.deny for restriction.

That's it.

Further doc

http://www.debianhelp.co.uk/tftp.htm
http://www.onlamp.com/pub/a/bsd/2003/06/05/FreeBSD_Basics.htm

Indo Doc

http://blog.ub.ac.id/hnachan/2010/12/08/protokol-tftp-trivial-file-transfer-protocol/
http://www.php.indah.web.id/2012/03/inetd-xinetd-daemon-socket-jaringan.html

Make TFTP

TFTP (Trivial File Transfer Protocol), a simple form of the File Transfer Protocol (FTP). TFTP uses the User Datagram Protocol (UDP)and provides no security features. It is often used by servers to boot diskless workstations, X-terminals, and to backup routers configurations files.

To install it in Debian or ubuntu:

#apt-get install tftpd tftp
edit /etc/xinetd.d/tftp file, if file doesnt exist create one.

service tftp

{

disable = no

socket_type = dgram

protocol = udp

wait = yes

user = root

server = /usr/sbin/in.tftpd

server_args = -s /tftpboot

per_source = 11

cps = 100 2

flags = IPv4

}

Create a directory called tftpboot in root
#mkdir /tftpboot
Change mode of the directory
#chmod 777 tftpboot
Restart xnetd
#/etc/inid.d/xinetd restart
Now test your connections
#tftp 192.168.10.10
Telnet to your cisco router and start backing up your configuration files.

Reference :
http://shirwa.wordpress.com/2007/11/15/backing-cisco-configuration-file-using-tftpd-in-linux/
http://linux.die.net/man/8/tftpd
http://www.tek-tips.com/viewthread.cfm?qid=532990
http://superuser.com/questions/670503/cant-create-new-files-on-tftp-server