How to find iptables file in centos

How to find the iptables file in centos?

#1Write an iptables command to configure a firewall rule. Such as: iptables -P OUTPUT ACCEPT.

[root@iZ23gx7o02aZ /]# cd /etc/sysconfig/
[root@iZ23gx7o02aZ sysconfig]# iptables -P OUTPUT ACCEPT

2. service iptables save to save.

[root@iZ23gx7o02aZ sysconfig]# service iptables save
iptables: Saving firewall rules to /etc/sysconfig/iptables:[  OK  ]
[root@iZ23gx7o02aZ sysconfig]# ls
atd         firstboot         iptables-config  networking       readonly-root  sshd
auditd      grub              irqbalance       network-scripts  rhn            sysstat
authconfig  htcacheclean      kdump            ntpd             rngd           sysstat.ioconf
cbq         httpd             kernel           ntpdate          rsyslog        system-config-firewall
clock       i18n              keyboard         prelink          sandbox        system-config-firewall.old
console     init              modules          quota_nld        saslauthd      udev
cpuspeed    ip6tables-config  netconsole       raid-check       selinux
crond       iptables          network          readahead        smartmontools
[root@iZ23gx7o02aZ sysconfig]#

3. Service iptables restart command to restart:

[root@iZ23gx7o02aZ sysconfig]# service iptables restart
iptables: Setting chains to policy ACCEPT: filter          [  OK  ]
iptables: Flushing firewall rules:                         [  OK  ]
iptables: Unloading modules:                               [  OK  ]
iptables: Applying firewall rules:                         [  OK  ]
[root@iZ23gx7o02aZ sysconfig]#

Related reference: centOS tutorial

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