参考:https://linuxize.com/post/how-to-install-elasticsearch-on-ubuntu-18-04/
【安装】
sudo apttitude install ufw
【使用】
启动:
sudo ufw allow 22
允许指定 IP 从指定端口访问:
sudo ufw allow from 192.168.100.20 to any port 9200
添加任务:
sudo ufw enable
查看状态:
sudo ufw status
输出:
Status: active To Action From -- ------ ---- 22 ALLOW Anywhere 9200 ALLOW 192.168.100.20 22 (v6) ALLOW Anywhere (v6)