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  • linux关闭防火墙命令

    1.  Linux系统:Red Hat Enterprise Linux Server release 6.5 (Santiago)

    临时关闭防火墙命令:
    service iptables stop
    service ip6tables stop

    永久关闭防火墙命令:
    chkconfig iptables off
    chkconfig ip6tables off

    查看防火墙状态命令:
    service iptables status

    [root@hadoop ~]# cat /etc/redhat-release 
    Red Hat Enterprise Linux Server release 6.5 (Santiago)
    
    [root@hadoop ~]# service iptables stop
    iptables: Setting chains to policy ACCEPT: filter          [  OK  ]
    iptables: Flushing firewall rules:                         [  OK  ]
    iptables: Unloading modules:                               [  OK  ]
    [root@hadoop ~]# service ip6tables stop
    ip6tables: Setting chains to policy ACCEPT: filter         [  OK  ]
    ip6tables: Flushing firewall rules:                        [  OK  ]
    ip6tables: Unloading modules:                              [  OK  ]
    
    [root@hadoop ~]# service iptables status
    iptables: Firewall is not running.
    [root@hadoop ~]# service ip6tables status
    ip6tables: Firewall is not running.
    
    [root@hadoop ~]# chkconfig iptables off
    [root@hadoop ~]# chkconfig ip6tables off

    2.  linux系统:CentOS Linux release 7.5.1804 (Core)

    前面说的几个命令,我在centos 7上用着都失效了。网上说,centos从7开始默认用的是firewalld,这个是基于iptables的,虽然有iptables的核心,但是iptables的服务是没安装的。所以你只要停止firewalld服务即可

    [root@hadoop ~]# sudo systemctl stop firewalld.service && sudo 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.

    如果你要改用iptables的话,需要安装iptables服务,并对命令做一些修改

    [root@hadoop ~]# service iptables stop #命令失效
    Redirecting to /bin/systemctl stop iptables.service
    Failed to stop iptables.service: Unit iptables.service not loaded.
    
    [root@hadoop ~]#  yum install iptables-services 
    [root@hadoop ~]# /bin/systemctl stop iptables.service
    [root@hadoop ~]# /bin/systemctl stop ip6tables.service

    永久关闭防火墙

    [root@hadoop ~]# chkconfig iptables off #命令失效
    Note: Forwarding request to 'systemctl disable iptables.service'.
    
    [root@hadoop ~]# systemctl disable iptables.service
    [root@hadoop ~]# systemctl disable ip6tables.service

    查看防火墙是否关闭

    [root@hadoop ~]# firewall-cmd --state
    not running

    总结:centos 7系统关闭防火墙有2种方式:

    方式1:
    关闭防火墙:systemctl stop firewalld.service
    永久关闭防火墙:systemctl disable firewalld.service

    方式2:
    首先安装iptables服务:yum install iptables-services 
    关闭防火墙:/bin/systemctl stop iptables.service && /bin/systemctl stop ip6tables.service
    永久关闭防火墙:systemctl disable iptables.service && systemctl disable ip6tables.service
    查看防火墙是否关闭:firewall-cmd --state

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  • 原文地址:https://www.cnblogs.com/zhengna/p/9316814.html
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