iptables -F
iptables -X
iptables -Z
iptables FORWARD -P ACCEPT
iptables -t nat -F
iptables -t nat -X
iptables -t nat -Z
yum install iptables-services
service iptables save
iptables -F
iptables -X
iptables -Z
iptables FORWARD -P ACCEPT
iptables -t nat -F
iptables -t nat -X
iptables -t nat -Z
yum install iptables-services
service iptables save