How to Disable iptables on Linux CentOS 5.7 Server

Iptables is used to set up, maintain, and inspect the tables of IPv4 packet filter rules in the Linux kernel. It can run as a host based firewall if properly configured. Iptables places rules into predefined chains (INPUT, OUTPUT and FORWARD) that are checked against any network traffic packets. In certain case, system administrator will need to disable this iptables due to some reasons. In this post, i will show the quick step to disable iptables on linux CentOS 5.7 server. This steps may working on other version such as CentOS 5.1, CentOS 5.2, CentOS 5.3, CentOS 5.4, CentOS 5.5 and CentOS 5.6.

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1. How to stop iptables on Linux RHEL 5/CentOS 5 server :

[root@CentOS57 ~]# service iptables stop

or

[root@CentOS57 ~]# /etc/init.d/iptables stop

How to stop ip6tables on Linux RHEL 5/CentOS 5 server :

[root@CentOS57 ~]# service iptables stop

or

[root@CentOS57 ~]# /etc/init.d/ip6tables stop

Note : Ignore this steps if ipv6 not configured or disabled
2. To ensure that iptables will not start after rebooting, please run this chkconfig command :

[root@CentOS57 ~]# chkconfig iptables off

3. How to check iptables status on Linux RHEL 5/CentOS 5 server. Make sure that it was stop :

[root@CentOS57 ~]# service iptables status
Firewall is stopped.

or

[root@CentOS57 ~]# /etc/init.d/iptables status
Firewall is stopped.
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