Troubleshoot TFTP

Testing TFTP

Create a file named test.txt with some content in /tftpboot path of the tftp server

sudo echo "Is my TFTP service working?" > /tftpboot/test.txt

Try to get the file with Linux:

tftp x.x.x.x
tftp> get test.txt
//Sent 159 bytes in 0.0 seconds
tftp> quit
cat test.txt

Try to get the file with Windows:

tftp x.x.x.x get test.txt

Troubleshooting TFTP

To test from windows, TFTP Client must be installed and the Firewall must allow traffic through port 69.

Control Panel -> Programs and Features -> Turn Windows Features on or off -> TFTP Client

Temporarily turn off Windows Firewall to allow TFTP:

Disable & Stop Firewall in Fedora 21

systemctl disable firewalld.service

systemctl stop firewalld.service

Can be undone with "start" and "enable".

Check Firewall in Fedora 21

systemctl status firewalld.service

Check Firewall in Debian/Ubuntu

sudo iptables -L

If disabled, the output should look like this:

Chain INPUT (policy ACCEPT)
target prot opt source destination 

Chain FORWARD (policy ACCEPT)
target prot opt source destination 

Chain OUTPUT (policy ACCEPT)
target prot opt source destination