How to check whether the firewall is turned off in Linux

1. Service mode

Check the firewall status:

[root@centos6 ~]# service iptables status
iptables：未运行防火墙。

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2. iptables method

First enter the init.d directory, the command is as follows:

[root@centos6 ~]# cd /etc/init.d/
[root@centos6 init.d]#

Then check the firewall status:

[root@centos6 init.d]# /etc/init.d/iptables status

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