centos7端口永久开放方法

/sbin/iptables -I INPUT -p tcp --dport 80 -j ACCEPT
/sbin/iptables -I INPUT -p tcp --dport 8081 -j ACCEPT
/sbin/iptables -I INPUT -p tcp --dport 8888 -j ACCEPT
/sbin/iptables -I INPUT -p tcp --dport 8080 -j ACCEPT
/sbin/iptables -I INPUT -p tcp --dport 8090 -j ACCEPT

保存配置

systemctl stop iptables.service
iptables -P INPUT ACCEPT
..........
service iptables save
systemctl enable iptables.service
systemctl start iptables.service