Disabling iptables in LINUX

For Fedora,Try the following commands
#service iptables save
# service iptables stop
# chkconfig iptables off
For other Linux distributions
# 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