Disable The Iptables Firewall in CentOS/RHEL

Iptables is a built in firewall in most Linux distributions.

Sometimes it is required to stop iptables for troubleshooting the network related problems.

Check the Status of The Iptables IPv4 Firewall
Run the following command to check the status of the iptables IPv4 firewall :
service iptables status

 
Check the Status of The Iptables IPv6 Firewall
Run the following command to check the status of the iptables IPv6 firewall :

service ip6tables status
 

Disable The Iptables IPv4 Firewall
Run the following commands to stop the iptables firewall for IPv4 :

service iptables save

service iptables stop

chkconfig iptables off

 
Disable The Iptables IPv6 Firewall
Run the following commands to stop the iptables firewall for IPv6 :

service ip6tables save

service ip6tables stop

chkconfig ip6tables off

 
Enable The Iptables IPv4 Firewall
Run the following commands to start the iptables firewall for IPv4 :

service iptables start

chkconfig iptables on

 
Enable The Iptables IPv6 Firewall
Run the following commands to start the iptables firewall for IPv6 :

service ip6tables start

chkconfig ip6tables on