iptables --flush confusion

[E K]

--- On Sat, 5/30/09, simon-tlug-GaisZHhRk3c at public.gmane.org <simon-tlug-GaisZHhRk3c at public.gmane.org> wrote:

> From: simon-tlug-GaisZHhRk3c at public.gmane.org <simon-tlug-GaisZHhRk3c at public.gmane.org>
> Subject: [TLUG]: iptables --flush confusion
> To: tlug-lxSQFCZeNF4 at public.gmane.org
> Received: Saturday, May 30, 2009, 5:22 PM
> I have a router set up to do NAT
> that's using iptables, with net.ipv4.ip_forward=1, and I'm
> somewhat confused why when I do an 'iptables --flush', I'm
> no longer able to connect to it from another device that is
> on the same subnet that the 'wan' interface is on.
> 
> Does anyone know why this is? Am I misunderstanding what it
> is that --flush does, or some other basic networking
> concept?
> 
> Cheers,
> spd
> --

You are clearing the filter table entries from the router. That basically breaks the NAT operation.


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