Re: [gentoo-user] loopback into gentoo iptables

[Hans-Werner Hilse <hilse@web.de>]

Hi,

On Fri, 5 Oct 2007 10:42:42 -0500
"Walter Willis" <walterwn@gmail.com> wrote:

> I have modem asdl zyxel 660 and activate loopback with command: "ip nat
> loopback on"

Where do you enter that and why? What is the thing _you_ call a
loopback? On what device or machine does it exist? You don't seem to be
talking about the "ifup" tool (since you talk about "ip", which however
does not know the "nat" mode?!?), and you don't seem to be talking
about the lo device either.

> the ask is:
> it is into gentoo linux  with iptables ?

Errm, again: What? Setting up you loopback device on gentoo is done
automatically by /etc/init.d/net.lo. Should be run on bootup by rc,
check "rc-update show".

Setting up NAT works using a sysctl (or the procfs). Restricting the
NAT works using iptables.

> the compiler module especial for function?

Errrr.... Again, not sure what you are asking here... Yes, you need
kernel modules for both NAT to work and as well netfilter modules for
the chains and targets and matches you want to use with iptables. They
don't really have to be modules, you can compile them statically into
the kernel as well.

If unsure, rephrase your question -- and be a bit more verbose on what
you intend to do... A bit more information might as well cure lack of
proper vocabulary... Give examples, try to describe the setting.

-hwh
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