CentOS7 Firewall防火墙常用命令

开启防火墙

systemctl start firewalld.service

关闭防火墙

systemctl stop firewalld.service

查看防火墙状态

systemctl status firewalld.service

开启开机启动防火墙

systemctl enable firewalld.service

关闭开机启动防火墙

systemctl disable firewalld.service

开启某个端口（80）

firewall-cmd --zone=public --add-port=80/tcp --permanent   //永久
firewall-cmd --zone=public --add-port=80/tcp               //临时

端口转发

firewall-cmd --zone=public --add-masquerade --permanent    //打开IP地址伪装
//将8080转发到80
firewall-cmd --zone=public --add-forward-port=port=80:proto=tcp:toport=8080 --permanent

创建黑名单

//创建blacklist ipset
firewall-cmd --permanent --zone=public --new-ipset=blacklist --type=hash:ip
//封禁 blacklist
firewall-cmd --permanent --zone=public --add-rich-rule='rule source ipset=blacklist drop'
//查看 blacklist
firewall-cmd --ipset=blacklist --get-entries
//添加IP到黑名单
firewall-cmd --permanent --zone=public --ipset=blacklist --add-entry=212.237.51.36
firewall-cmd --permanent --zone=public --ipset=blacklist --add-entry=188.226.191.66
firewall-cmd --permanent --zone=public --ipset=blacklist --add-entry=80.211.137.182
firewall-cmd --permanent --zone=public --ipset=blacklist --add-entry=60.191.66.226

禁止被PING（丢弃ICMP包）

firewall-cmd --permanent --zone=public --add-rich-rule='rule protocol value=icmp drop'  

查看所有规则

firewall-cmd --zone=public --list-all

重载防火墙配置

firewall-cmd --reload

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参考文章

云服务器 ECS CentOS 7配置默认防火墙 Firewall
https://help.aliyun.com/knowledge_detail/41317.html
RHEL7、CentOS7 下使用 Firewall 封IP
https://www.itlnmp.com/401.html
firewalld禁止被PING(丢弃ICMP包)
http://blog.youkuaiyun.com/Sidyhe/article/details/54836165?locationNum=10&fps=1