查看防火墙某个端口是否开放
firewall-cmd --query-port=80/tcp
开放防火墙端口80
firewall-cmd --zone=public --add-port=80/tcp --permanent
关闭80端口
firewall-cmd --zone=public --remove-port=80/tcp --permanent
配置立即生效
firewall-cmd --reload
查看防火墙状态
systemctl status firewalld
关闭防火墙
systemctl stop firewalld
打开防火墙
systemctl start firewalld
开放一段端口
firewall-cmd --zone=public --add-port=8121-8124/tcp --permanent
查看开放的端口列表
firewall-cmd --zone=public --list-ports
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