iptables清空默认规则并保存

yum ×××tall iptables-services ##安装
systemctl enable iptables ##开机启动
systemctl restart iptables ##重启服务
iptables -F##清空防火墙规则
service iptables save##保存当前防火前规则
systemctl disable iptables##取消开机启动
systemctl disable libvirtd.service##取消关联服务开机启动
libvirtd服务如果不取消开机启动的话 清空的防火墙规则会在下次重启前还原

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参考文献

redhat官网原文关于iptables 详细说明
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/security_guide/sect-security_guide-iptables

Iptables原理详解
https://www.cnblogs.com/ggjucheng/archive/2012/08/19/2646466.html

iptables清空默认规则并保存

原文：https://blog.51cto.com/4579424/2409261