Problem starting iptables on FC3

[Stephen Walton]

fedora-list at jamesplace.net wrote:

>When I try to start iptables it simply fails with no errors and nothing 
>in /var/log/messages. If I try to load it after running the (fwbuilder 
>generated) script it starts and the stops immediately.
>  
>
The /etc/rc.d/init.d/iptables script assumes that your firewall setup is 
in /etc/sysconfig/iptables.  If you are using Firewall Builder (I do and 
highly recommend it for all but the simplest setups), its script is self 
contained:  it first resets iptables and then installs the settings you 
specified in fwbuilder.  If you type  "/sbin/service iptables start" 
after running your fwbuilder script, it will (probably) screw things up 
as it will try to add the setup in /etc/sysconfig on top of the 
fwbuilder settings.  "/sbin/service iptables stop" is still useful even 
if you're using fwbuilder, as it will in effect turn off the firewall by 
resetting everything to its defaults.