Re: Is netfilter hook and iptables rules are same?

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Hi Thomas,

Thanks for the reply.

I need to clarify this. Is iptables(user space tool) puts hook into
the netfilter framework?

Ganesan

On 7/27/07, Thomas Petazzoni <thomas.petazzoni@xxxxxxxx> wrote:
> Hi,
>
> Le Fri, 27 Jul 2007 12:15:53 +0530,
> "Ganesan Natarajan" <natrajputra@xxxxxxxxx> a écrit :
>
> >          What is the difference between the netfilter hooks and
> > iptables rules?
> >
> > Are both same?
>
> Netfilter in the kernel part, while iptables is an userspace program
> that allows to tell Netfilter how it should behave.
>
> From http://en.wikipedia.org/wiki/Netfilter:
>
> «
> Netfilter is a framework that provides a set of hooks within the Linux
> kernel for intercepting and manipulating network packets.
>
> [...]
>
> iptables is the name of the user space tool by which administrators
> create rules for the packet filtering and NAT modules.
> »
>
> Sincerly,
>
> Thomas
> --
> Thomas Petazzoni - thomas.petazzoni@xxxxxxxx
> http://{thomas,sos,kos}.enix.org - http://www.toulibre.org
> http://www.{livret,agenda}dulibre.org
>

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