132 lines
2.5 KiB
Markdown
132 lines
2.5 KiB
Markdown
- [1.CentOS7、8 配置及使用firewall](#1centos78-配置及使用firewall)
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* [1.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](#1systemctl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)
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* [2.firewalld的基本使用](2firewalld的基本使用)
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* [3.配置firewalld-cmd](3配置firewalld-cmd)
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# 1.CentOS7、8 配置及使用firewall
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## 1.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。
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- 启动一个服务
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```
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systemctl start firewalld.service
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```
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- 关闭一个服务
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```
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systemctl stop firewalld.service
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```
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- 重启一个服务
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```
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systemctl restart firewalld.service
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```
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- 显示一个服务的状态
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```
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systemctl status firewalld.service
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```
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- 在开机时启用一个服务
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```
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systemctl enable firewalld.service
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```
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- 在开机时禁用一个服务
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```
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systemctl disable firewalld.service
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```
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- 查看服务是否开机启动
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```
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systemctl is-enabled firewalld.service
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```
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- 查看已启动的服务列表
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```
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systemctl list-unit-files|grep enabled
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```
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- 查看启动失败的服务列表
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```
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systemctl --failed
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```
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## 2.firewalld的基本使用
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- 启动
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```
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systemctl start firewalld
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```
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- 查看状态
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```
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systemctl status firewalld
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```
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- 停止
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```
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systemctl disable firewalld
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```
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- 禁用
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```
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systemctl stop firewalld
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```
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### 3.配置firewalld-cmd
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- 查看版本
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```
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firewall-cmd --version
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```
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- 查看帮助
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```
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firewall-cmd --help
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```
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- 显示状态
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```
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firewall-cmd --state
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```
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- 查看所有打开的端口
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```
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firewall-cmd --zone=public --list-ports
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```
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- 更新防火墙规则
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```
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firewall-cmd --reload
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```
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- 查看区域信息
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```
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firewall-cmd --get-active-zones
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```
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- 查看指定接口所属区域
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```
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firewall-cmd --get-zone-of-interface=eth0
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```
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- 拒绝所有包
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```
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firewall-cmd --panic-on
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```
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- 取消拒绝状态
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```
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firewall-cmd --panic-off
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```
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- 查看是否拒绝
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```
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firewall-cmd --query-panic
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```
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- 查看所通过的服务
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```
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firewall-cmd --list-services
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```
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- 添加一个服务
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```
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firewall-cmd --add-service openvpn
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```
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- 永久添加一个服务
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```
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firewall-cmd --permanent --add-service openvpn
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```
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- 开启一个端口
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```
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firewall-cmd --zone=public --add-port=80/tcp --permanent （--permanent永久生效，没有此参数重启后失效）
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```
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- 重新载入
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```
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firewall-cmd --reload
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```
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- 查看端口是否开启
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```
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firewall-cmd --zone= public --query-port=80/tcp
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```
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- 删除开放端口
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```
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firewall-cmd --zone= public --remove-port=80/tcp --permanent
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```
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