linux centos7防火墙的简单配置实现开放端口

╰+攻爆jí腚メ 2022-12-06 04:17 105阅读 0赞

linux 的防火墙简单设置

## 1. 检查防火墙状态 ##

*  代码

firewall-cam --state

[root@localhost ~]# firewall-cmd --state
    running
    [root@localhost ~]

## 2. 防火墙配置 ##

*  linux系统中有个配置文件，里面配置了开机后防火墙应该怎么工作

[root@localhost ~]# firewall-cmd --state
    running
    [root@localhost ~]#

*  关闭防火墙

[root@localhost ~]# systemctl disable firewalld.service
    Removed symlink /etc/systemd/system/multi-user.target.wants/firewalld.service.
    Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.
    [root@localhost ~]# firewall-cmd --state
    running
    [root@localhost ~]#

*  开启防火墙

systemctl enable firewalld.service

*  但是，只会在下一次开机后才会启用当前配置

## 3. 手动关闭防火墙 ##

[root@localhost ~]# systemctl stop firewalld.service
    [root@localhost ~]# firewall-cmd --state
    not running
    [root@localhost ~]#

## 4. 手动开启防火墙 ##

[root@localhost ~]# systemctl start firewalld.service
    [root@localhost ~]# firewall-cmd --state
    running
    [root@localhost ~]#

## 5. 检查开放的端口 ##

firewall-cmd --list-ports

## 6. 查询指定端口 ##

[root@localhost ~]# firewall-cmd --query-port=80/tcp
    no
    [root@localhost ~]#p

## 7. 开放指定端口 ##