CentOS7使用firewalld打开关闭防火墙与端口

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.开启端口访问
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

允许IP访问
firewall-cmd –permanent –add-rich-rule=”rule family=”ipv4″ source address=”10.0.10.10″ port protocol=”tcp” port=”6379″ accept”
删除IP访问
firewall-cmd –permanent –remove-rich-rule=”rule family=”ipv4″ source address=”10.0.10.10″ port protocol=”tcp” port=”6379″ accept”

允许IP段访问
firewall-cmd –permanent –add-rich-rule=”rule family=”ipv4″ source address=”10.0.10.0/24″ port protocol=”tcp” port=”80″ accept”
删除IP段访问
firewall-cmd –permanent –remove-rich-rule=”rule family=”ipv4″ source address=”10.0.10.0/24″ port protocol=”tcp” port=”80″ accept”
重新载入
firewall-cmd –reload
查看public列表
firewall-cmd –zone=public –list-all

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