Centos 7之Firewalld相关命令详细介绍

Centos 7之Firewalld相关命令详细介绍

引言：Centos 7是目前非常流行的Linux发行版本，本文将重点介绍如何来使用firewalld相关命令启动服务以及添加服务或者端口等操作。

1.  查看firewall服务状态

  >>  systemctl status firewalld

[root@flybird ~]# systemctl status firewalld 
● firewalld.service - firewalld - dynamic firewall daemon 
  Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled) 
  Active: inactive (dead)

 显示当前的firewall并未启动

2.  启动/关闭firewall

  >> systemctl start/stop firewalld

root@flybird ~]# systemctl start firewalld 
[root@flybird ~]# systemctl status firewalld 
● firewalld.service - firewalld - dynamic firewall daemon 
  Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled) 
  Active: active (running) since Fri 2016-12-02 23:17:09 CST; 11s ago 
 Main PID: 1279 (firewalld) 
  CGroup: /system.slice/firewalld.service 
      └─1279 /usr/bin/python -Es /usr/sbin/firewalld --nofork --nopid

3.  禁用或者启用firewall

  >> systemctl disable/enable firewalld

4.  查看端口是否开放

  >>> firewall-cmd --query-port=8020/tcp

5. 新增开发端口

  >> firewall-cmd --add-port=5000/tcp --permanent

[root@flybird ~]# firewall-cmd --query-port=5000/tcp 
no 
[root@flybird ~]# firewall-cmd --add-port=5000/tcp --permanent 
success

6.  关于服务

  >> firewall-cmd --add-service=ftp --permanent

  >> firewall-cmd --remove-service=ftp --permanent

7.  查看firewall状态

   >> firewall-cmd --status

   >>  systemctl status firewalld

8. 查看 firewall目前开放的内容

   >> firewall-cmd --list-all

[root@flybird ~]# firewall-cmd --list-all 
public (default) 
 interfaces:  
 sources:  
 services: dhcpv6-client http ssh 
 ports: 443/tcp 80/tcp 3306/tcp 6739/tcp 10051/tcp 10050/tcp 
 masquerade: no 
 forward-ports:  
 icmp-blocks:  
 rich rules:

9.  查看开发的端口

  >> firewall-cmd --list-port

10. 查看firewall-cmd命令的使用说明

   >> firewall-cmd --help

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