#查看防火墙状态systemctl status firewalld
#开启防火墙systemctl start firewalld.service#重启防火墙systemctl restart firewalld.service#查看firewall防火墙的状态firewall-cmd --state#查看防火墙开放端口规则firewall-cmd --list-port#查看80端口是否开启firewall-cmd --query-port=80/tcp#开放80端口#（–permanent永久生效，没有此参数重启后就失效）firewall-cmd --permanent --add-port=80/tcp
#设置端口后需要重新加载防火墙才会生效firewall-cmd --reload
#查询指定端口80是否开放firewall-cmd --query-port=80/tcp# 移除端口firewall-cmd --permanent --remove-port=8080/tcp
