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Centos7查看防火墙对应的开放端口
查看已经开放的端口
firewall-cmd --list-ports
开启端口
firewall-cmd --zone=public --add-port=80/tcp --permanent
命令含义:
–zone #作用域
–add-port=80/tcp #添加端口，格式为：端口/通讯协议
–permanent #永久生效，没有此参数重启后失效
开启端口后记得重启
启动：
systemctl start firewalld
停止：
systemctl stop firewalld
重启：
systemctl restart firewalld.service
查看状态：
systemctl status firewalld
开机启动：
systemctl enable firewalld.service
开机禁用：
systemctl disable firewalld
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
查看版本：
firewall-cmd --version
查看帮助：
firewall-cmd --help
显示状态：
firewall-cmd --state
查看所有打开的端口：
firewall-cmd --zone=public --list-ports
更新防火墙规则：
firewall-cmd --reload
查看区域信息:
firewall-cmd --get-active-zones
查看指定接口所属区域：
firewall-cmd --get-zone-of-interface=eth0
拒绝所有包：
firewall-cmd --panic-on
取消拒绝状态：
firewall-cmd --panic-off
查看是否拒绝：
firewall-cmd --query-panic
开放80端口：
firewall-cmd --zone=public --add-port=80/tcp --permanent
（–permanent永久生效，没有此参数重启后失效）
查看80端口：
firewall-cmd --zone=public --query-port=80/tcp
删除80端口：
firewall-cmd --zone=public --remove-port=80/tcp --permanent
开放端口区间：
firewall-cmd --permanent --zone=public --add-port=8080-9999/tcp //永久
重新载入使配置立即生效：
firewall-cmd --reload
