On Mon, Oct 11, 2010 at 11:02 AM, Dattatray Kamble <[email protected]> wrote:
... snip ...

>      I have few public IP's ..I don't have modem...My proxy configured as
> transparent with two ethernet cards.
>      If i apply DNAT rule then i can access the vsftpd system locally with
> public ip.but i can't access the system on lan..
>
> The rule applied as follows --
>
> #iptables -t nat -A PREROUTING -d 118.x.x.x -j DNAT --to 192.y.y.y
>
> this 118.x.x.x is no where assigned in the network so where should i apply
> port forwarding if no ethernet card available for that ip.

Please see [1].   Your ISP must have installed some kind of box on
your premise that converts the media from cable/ DSL / leased line /
to Ethernet frames to connect to your LAN.  You need to read the docs
on that device and/or talk to the support guys @ your ISP.  Your
118.x.x.x is most likely assigned to that box.


> i am struggling on this issue since 5 days.

[1] I would strongly advice you to learn the basics of network
topology in a visual form.  IMO, w/o a visual topology it is difficult
to explain how your network is setup and w/o that info it is next to
impossible for anyone to help you.   You may continue to struggle for
many more days if you are unwilling to take this step.

-- Arun Khan
-- 
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