CentOS7设置防火墙,记录一下过程
1、防火墙设置
- 启动防火墙:
systemctl start firewalld.service
- 关闭防火墙:
systemctl stop firewalld.service
- 重启防火墙:
systemctl restart firewalld.service
- 显示防火墙状态:
systemctl status firewalld.service
- 开机自动开启防火墙:
systemctl enable firewalld.service
- 开机禁用防火墙:
systemctl disable firewalld.service
- 查看防火墙是否开机启动:
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
2、防火墙配置
- 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
- 添加开放端口:
firewall-cmd --zone=public --add-port=80/tcp --permanent
(–permanent永久生效,没有此参数重启后失效) - 删除开放端口:
firewall-cmd --zone=public --remove-port=80/tcp --permanent
- 查看开放端口:
firewall-cmd --zone=public --query-port=80/tcp