CentOS7使用firewalld打开关闭防火墙与端口

转自:https://www.cnblogs.com/moxiaoan/p/5683743.html

  1. firewalld的基本使用
    启动: systemctl start firewalld
    关闭: systemctl stop firewalld
    查看状态: systemctl status firewalld
    开机禁用 : systemctl disable firewalld
    开机启用 : systemctl enable firewalld

  2. systemctl是CentOS7的服务管理工具中主要的工具,它融合之前service和chkconfig的功能于一体。
    启动一个服务:systemctl start firewalld.service
    关闭一个服务:systemctl stop firewalld.service
    重启一个服务:systemctl restart firewalld.service
    显示一个服务的状态:systemctl status firewalld.service
    在开机时启用一个服务:systemctl enable firewalld.service
    在开机时禁用一个服务:systemctl disable firewalld.service
    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

  3. 配置firewalld-cmd
    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

  4. 开启端口
    添加:
    firewall-cmd –zone=public –add-port=80/tcp –permanent (–permanent永久生效,没有此参数重启后失效)
    重新载入:
    firewall-cmd –reload
    查看:
    firewall-cmd –zone= public –query-port=80/tcp
    删除:
    firewall-cmd –zone= public –remove-port=80/tcp –permanent