iptables is administration tool / command for IPv4 packet filtering and NAT.
You need to use the following tools:
First login as the root user.
Next enter the following three commands to disable firewall.# service iptables save
# service iptables stop
# chkconfig iptables off
If you are using IPv6 firewall, enter:# service ip6tables save
# service ip6tables stop
# chkconfig ip6tables off
