常用防火墙语句

先掌握下 systemctl+firewall 命令

描述 命令
查看firewall状态 systemctl status firewalld.service
启动firewall systemctl start firewalld
停止firewall systemctl stop firewalld
开机启动firewall systemctl enable firewalld
开机禁止firewall systemctl disable firewalld
额外学习下systemctl命令^_
查看服务是否开机启动 systemctl is-enabled firewalld.service
查看已启动的服务列表 systemctl list-unit-files|grep enabled
查看启动失败的服务列表 systemctl --failed

其次掌握 firewall-cmd 命令

描述 命令
查看firewall全部信息 firewall-cmd --list-all
查看已开放的端口 firewall-cmd --list-ports
更新防火墙规则 firewall-cmd --reload
开放端口 firewall-cmd --zone=public --add-port=3000/tcp --permanent
关闭端口 firewall-cmd --zone=public --remove-port=3000/tcp --permanent
参考链接

https://blog.csdn.net/qq_41618510/article/details/105045328