[ale] port forwarding help

[Joe]

You might have already checked on this, but here is a suggestion.  Are you
accepting those packets in your INPUT chain?



Joe-

----- Original Message -----
From: "Chris Ricker" <kaboom at gatech.edu>
To: ale at ale.org
To: <ale at ale.org>
Sent: Thursday, April 03, 2003 2:42 PM
Subject: Re: [ale] port forwarding help


> On Thu, 3 Apr 2003, Michael D. Hirsch wrote:
>
> > This seems simple, but I've been thumping my head against if for a while
> > now.  All I want to do is forward anything to port xx to machine
y.y.y.y.
> >
> > From reading docs it looks like all I need this:
> >
> > iptables -t nat -A PREROUTING -p tcp --dport xx -j DNAT --to y.y.y.y:xx
>
> that's fine
>
> > I have made sure that port forwarding is turned on.
> >
> > I test by telnetting to port xx on the forwarding box, but never get a
> > connection.
> >
> > One other possible complication, do I need to worry that I have only 1
nic
> > card?  So on my test box all the traffic is really on one network.  In
> > production, of course, I will use multiple network cards.
>
> bring up a virtual interface and forward it (rather than the IP you've
> configured on the real interface)
>
> that still might not work, but it's more likely to ;-)
>
> later,
> chris
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> Ale at ale.org
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