Re: NAT Issue

Red Baron
Tue, 02 Mar 2010 04:43:17 -0000

Thanks..that did the job.

On Mon, Mar 1, 2010 at 5:26 PM, Tom Eastep <teastep@shorewall.net> wrote:

> Red Baron wrote:
> > shorewall-lite version 4.4.6
> > Debian Lenny -  2.6.26-2-686
> >
> > I have a large network of public IPS ( 1.1.1.128/25
<http://1.1.1.128/25>
> )
> >
> > I have broken this up into several smaller subnets. I have a few
servers
> > that I want to NAT translate from my gateway server to a public IP on
> > VLAN350. which is subnet 1.1.1.192 / 27.
> >
> > My gateway server has the following interfaces
> >
> > eth0 - 1.1.1.149 /28
> > eth1 - 172.16.1.0 /24
> > vlan350 - 1.1.1.193 /27
> >
> >
> > I have this entry in the nat configuration file:
> > #EXTERNAL    INTERFACE    INTERNAL    ALL        LOCAL
> > 1.1.1.198    vlan350    172.16.1.23    no    no
> > #LAST LINE -- ADD YOUR ENTRIES ABOVE THIS LINE -- DO NOT REMOVE
> >
> > but when the host 172.16.1.23 pings the internet, the IP is
masquerarded
> > as 1.1.1.149, not 1.1.1.198
> >
> > From the gateway, I can do the following
> >
> > ping www.google.com <http://www.google.com/> -I 1.1.1.198
> >
> > and I do get replies, and tcpdump on the gateway verifies that the IP
> > being used is correct, so I know the routes are in place.
> >
> >
> > Any suggestions as to what I might be doing wrong?
>
> I assume that eth0 is your external interface with the default route? If
> so you want to specify that interface in the nat file, not vlan350.
>
> -Tom
> --
> Tom Eastep        \ When I die, I want to go like my Grandfather who
> Shoreline,         \ died peacefully in his sleep. Not screaming like
> Washington, USA     \ all of the passengers in his car
> http://shorewall.net \________________________________________________
>
>
>
>
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