How to Disable the Firewall on Linux

How to Disable the Firewall on Linux

Contents
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1. Verify iptables status
2. Stop the iptables service
3. Re-verify iptables status
4. Stop the iptables service from starting when you restart the server
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1. Verify firewall

[root@rac2 ~]# service iptables status
Table: filter
Chain INPUT (policy ACCEPT)
num  target     prot opt source               destination
1    ACCEPT     all  --  0.0.0.0/0            0.0.0.0/0           state RELATED,ESTABLISHED
2    ACCEPT     icmp --  0.0.0.0/0            0.0.0.0/0
3    ACCEPT     all  --  0.0.0.0/0            0.0.0.0/0
4    ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0           state NEW tcp dpt:22
5    REJECT     all  --  0.0.0.0/0            0.0.0.0/0           reject-with icmp-host-prohibited

Chain FORWARD (policy ACCEPT)
num  target     prot opt source               destination
1    REJECT     all  --  0.0.0.0/0            0.0.0.0/0           reject-with icmp-host-prohibited

Chain OUTPUT (policy ACCEPT)
num  target     prot opt source               destination

[root@rac2 ~]#


2. Stop the iptables service

[root@rac2 ~]# service iptables stop
iptables: Setting chains to policy ACCEPT: filter          [  OK  ]
iptables: Flushing firewall rules:                         [  OK  ]
iptables: Unloading modules:                               [  OK  ]
[root@rac2 ~]#


3. Re-verify iptables status

[root@rac2 ~]# service iptables status
iptables: Firewall is not running.
[root@rac2 ~]#


4. Stop the iptables service from starting when you restart the server

[root@rac2 ~]# chkconfig iptables off
[root@rac2 ~]#

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Thank you,
Rajasekhar Amudala
Email: br8dba@gmail.com