CentOS firewall command set

1.firewalld basic use:

启动防火墙:   systemctl start firewalld
防火墙状态:   systemctl status firewalld
停止防火墙:   systemctl stop firewalld
禁止开机启动: systemctl disable firewalld

Configuring firewall-cmd

查看版本:                  firewall-cmd --version
查看帮助:                  firewall-cmd --help
显示状态:                  firewall-cmd --state
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
更新防火墙规则:            firewall-cmd --reload
更新防火墙规则,重启服务:    firewall-cmd --completely-reload
查看已激活的Zone信息:      firewall-cmd --get-active-zones
查看所有打开的端口:        firewall-cmd --zone=public --list-ports
查看指定接口所属区域:      firewall-cmd --get-zone-of-interface=eth0

3. The level of trust, the value specified by the Zone

drop:     丢弃所有进入的包,而不给出任何响应 
block:    拒绝所有外部发起的连接,允许内部发起的连接 
public:   允许指定的进入连接 
external: 同上,对伪装的进入连接,一般用于路由转发 
dmz:      允许受限制的进入连接 
work:     允许受信任的计算机被限制的进入连接,类似 workgroup 
home:     同上,类似 homegroup 
internal: 同上,范围针对所有互联网用户 
trusted:  信任所有连接

4. The opening and closing port

以下都是指在public的zone下的操作,不同的Zone只要改变Zone后面的值就可以
添加策略:firewall-cmd --permanent --zone=public --add-port=80/tcp 
更新策略:firewall-cmd --reload
查看策略:firewall-cmd --zone=public --query-port=80/tcp
删除策略:firewall-cmd --permanent --zone=public --remove-port=80/tcp 

5. Management Services

以httpd服务为例, 添加到work zone
添加策略:firewall-cmd --zone=work --add-service=httpd
查看策略:firewall-cmd --zone=work --query-service=httpd
删除策略:firewall-cmd --zone=work --remove-service=httpd

6. Configure the IP address masquerading

查看:firewall-cmd --zone=external --query-masquerade
打开:firewall-cmd --zone=external --add-masquerade
关闭:firewall-cmd --zone=external --remove-masquerade

7. Port Forwarding

打开端口转发,先要打开IP地址伪装:   firewall-cmd --zone=external --add-masquerade
转发 tcp 233端口至2333:         firewall-cmd --zone=external --add-forward-port=23:porto=tcp:toport=2333
转发端口数据至另一个IP的相同端口:  firewall-cmd --zone=external --add-forward-port=23:porto=tcp:toaddr=10.10.10.10
转发端口数据至另一个IP的2333端口: firewall-cmd --zone=external --add-forward-port=23:porto=tcp::toport=2333:toaddr=10.10.10.10

8.systemctl is CentOS7 service management tool in the main tool before it blends service and chkconfig functions in one.

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

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Origin www.cnblogs.com/warez/p/12057184.html