why is iptables still filtering after i disable the firewall?

[Christopher Chan]

Robert P. J. Day wrote:
> On Wed, 15 Sep 2010, Christopher Chan wrote:
> 
>> Robert P. J. Day wrote:
>>>   i suspect this is based on my unfamiliarity with the way ubuntu
>>> pre-10.10 deals with firewalls but i'm trying to simply ping from
>>> my ubuntu system to a centos 5.5 box on the same in-house wireless
>>> network and i'm getting icmp responses, "Destination Host
>>> Unreachable."  yet i can ping the other way (centos -> ubuntu).
>> I would completely uninstall 'uncomplicated firewall' and restart
>> the network. Ubuntu's complicated approach to trying to make it
>> simple for users to setup firewall rules is just broken.
> 
>   then what would be the incantation for disabling iptables entirely?
> i can only *guess* that this is what's causing my problem as i can't
> think of any other reason for not being able to ping out.
> 

Beats me. I could not be bothered to go through the blooming scripts. I 
do not have ufw anywhere on my boxes.

I just noticed that I do not have ufw in any of the runlevels except rc1 
and rcS in upstart. So presumably 'update-rc.d ufw stop 39 2 3 4 5' 
should do the trick.