[image] 


# 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...