Linux disable or remove the iptables firewall

Posted by Vivek Gite [Last updated: December 30, 2006]

Q. How do I disable the iptables firewall in Fedora Core Linux?

A. Iptables is used to set up, maintain, and inspect the tables of IP packet filter rules in the Linux kernel.

If you are using RHEL (Redhat), Fedora core or Cent os just type following commands to disable the iptables firewall:
# service iptables save
# service iptables stop
# chkconfig iptables off

If you are using any other disro type the following command to clear up firewall rules:
# iptables -F
# iptables -X
# iptables -t nat -F
# iptables -t nat -X
# iptables -t mangle -F
# iptables -t mangle -X
# iptables -P INPUT ACCEPT
# iptables -P OUTPUT ACCEPT

You may need to put above rules in a shell script and execute the same. Also remove your iptables startup script from your network configuration file such as /etc/network/interfaces. Look for post-up directive.