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#chkconfig --list | grep tftp <- Will tell you if it is set to run on boot.
#ps -aux | grep tftp <- will tell you if it is running.
#netstat -a | grep tftp <- will tell you if its running on the right port
# ss -ua | grep tftp <- will tell you if its running on the right port
#nmap -sS server <- will show you if the service is available.
# echo "in.tftpd: 22.214.171.124" >> /etc/hosts.allow <- Will allow a host access
# echo "in.tftpd: ALL" >> /etc/hosts.deny <- Will block everyone else.
-A RH-Firewall-1-INPUT -p udp -m udp --dport 69 -j ACCEPT <- Added to iptables will allow the traffic