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 |