Error trying to TFTP to a server

Question

I am getting the below error when I try to TFTP to a server in our domain. Any ideas. I checked the permissions on the target directory and it is good, in fact I opened it wide open to test and get the same error. I can TFTP to my laptop fine. The servers are domain controllers running windows 2003.
Switch#copy bootflash: tftp:
Source filename []? cat4000-i9s-mz.122-25.EWA4.bin
Address or name of remote host []? 10.89.3.31
TFTP: error code 2 received - Access violation
%Error opening tftp://10.89.3.31/cat4000-i9s-mz.122-25.EWA4.bin (Permission denied)
Thanks,
Mike

Answer 1

This worked for me:
sudo apt-get install xinetd tftpd tftp
# nano /etc/xinetd.d/tftp , enter the following:
service tftp
protocol = udp
port = 69
socket_type = dgram
wait = yes
user = nobody
server = /usr/sbin/in.tftpd
server_args = /tftpboot
disable = no
sudo mkdir /tftpboot
sudo chmod -R 777 /tftpboot
sudo chown -R nobody /tftpboot
sudo service xinetd restart
on linux:
# nano /etc/selinux/config , enter the following:
SELINUX=disabled
SELINUXTYPE=targeted
SETLOCALDEFS=0
# flush the iptables to disable them.
iptables -F
# create the files and put "chmod 777" on them.
cd /tftpboot
touch startup-config
chmod 777 startup-config
touch c2950-i6q4l2-mz.121-19.EA1c.bin
chmod 777 c2950-i6q4l2-mz.121-19.EA1c.bin
# on the router, go into "en" mode.
# backup the startup-config file
copy nvram:startup-config tftp:
10.10.10.20   (the ip of the linux box)
startup-config (the file on the linux box)
# backup the IOS file
copy c2950-i6q4l2-mz.121-19.EA1c.bin tftp:
10.10.10.20   (the ip of the linux box)
c2950-i6q4l2-mz.121-19.EA1c.bin (the file on the linux box)  (note: "l" not "1")