查看已開放的端口
firewall-cmd --list-ports
開放端口(開放後需要要重啓防火牆才生效)
firewall-cmd --zone=public --add-port=3338/tcp --permanent
重啓防火牆
firewall-cmd --reload
關閉端口(關閉後需要要重啓防火牆才生效)
firewall-cmd --zone=public --remove-port=3338/tcp --permanent
開機啓動防火牆
systemctl enable firewalld
開啓防火牆
systemctl start firewalld
禁止防火牆開機啓動
systemctl disable firewalld
停止防火牆
systemctl stop firewalld