# 开启防火墙
systemctl start firewalld.service


# 防火墙开机启动
systemctl enable firewalld.service


# 关闭防火墙
systemctl stop firewalld.service


# 查看防火墙状态
firewall-cmd --state


# 查看现有的规则
iptables -nL
firewall-cmd --zone=public --list-ports


# 重载防火墙配置
firewall-cmd --reload


# 添加单个单端口
firewall-cmd --permanent --zone=public --add-port=81/tcp


# 添加多个端口
firewall-cmd --permanent --zone=public --add-port=8080-8083/tcp


# 删除某个端口
firewall-cmd --permanent --zone=public --remove-port=81/tcp


# 针对某个 IP开放端口
firewall-cmd --permanent --add-rich-rule="rule family="ipv4" source address="192.168.142.166" port protocol="tcp" port="6379" accept"
firewall-cmd --permanent --add-rich-rule="rule family="ipv4" source address="192.168.0.233" accept"


# 删除某个IP
firewall-cmd --permanent --remove-rich-rule="rule family="ipv4" source address="192.168.1.51" accept"


# 针对一个ip段访问
firewall-cmd --permanent --add-rich-rule="rule family="ipv4" source address="192.168.0.0/16" accept"
firewall-cmd --permanent --add-rich-rule="rule family="ipv4" source address="192.168.1.0/24" port protocol="tcp" port="9200" accept"


# 添加操作后别忘了执行重载
firewall-cmd --reload