Disable firewall
- Login as the root user.
- Next enter the following three commands to disable firewall.
service iptables save service iptables stop chkconfig iptables off - Disable IPv6 firewall.
service ip6tables save service ip6tables stop chkconfig ip6tables off
https://superuser.com/questions/794104/how-to-permanently-disable-firewall-in-red-hat-linux
