Disable or Turnoff IPTables ( Firewall ) in Linux

Below Steps show how to disable IPTABLES ( Firewall ) in Linux

Check IPTABLES are running

[root@xyz ~]# service iptables status
Table: mangle
Chain PREROUTING (policy ACCEPT 1169 packets, 809K bytes)
num   pkts bytes target     prot opt in     out     source               destination
........
........

Stop IPtables Temporary

[root@xyz ~]# service iptables stop
iptables: Flushing firewall rules:          [  OK  ]
iptables: Setting chains to policy ACCEPT: filter [  OK  ]
iptables: Unloading modules: [  OK  ]

Stop IPtables Permanently

[root@xyz ~]# chkconfig iptables off
Restart the System

After Restart ( Check there is no rules )
[root@center ~]# service iptables status
Table: filter
Chain INPUT (policy ACCEPT 126 packets, 21125 bytes)
num   pkts bytes target     prot opt in     out     source               destination        

Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
num   pkts bytes target     prot opt in     out     source               destination        

Chain OUTPUT (policy ACCEPT 86 packets, 10809 bytes)
num   pkts bytes target     prot opt in     out     source               destination