"Marco Paglioni" <nospam@netapps.it> wrote in message news:<c9kojo$f01$1@balena.cs.interbusiness.it>...
> Scenario:
>
> i have one router, and 8 static ip from my isp
>
> i want to assign to a linux machine behind the router, all avaiable public
> ip (knowing that one is for the net, one for the broadcast, one for the
> remote router and one for the wan interface on my router).
>
> The router is a Telindus 9100, but i need help on the logic of the
> configuration, not the real setup of the router.
>
> One of my friends told me that i have to assign another public ip to the LAN
> interface of the router.
> Then i can assign the remaining ip (3) to the linux machine.
>
> My problem is that the router does not seems to forward packet from the wan
> ip to the lan ip.
> I tried adding on free ip to one machine, setting the gateway to the lan ip
> of the router, and it seems that pinging the router lan ip works, but
> pinging an outside ip gives me network unreachable.
>
>
> What i'm doing wrong? Do i have to specify some type of forwarding/routing
> on the router?
>
> my ip are those:
>
> x.x.x.184 network
> x.x.x.185 remote router
> x.x.x.186 local router (wan)
> x.x.x.187 local router (lan)
> x.x.x.188 linux box
> x.x.x.189 linux box
> x.x.x.190 linux box
> x.x.x.191 broadcast
>
> if i give an ip of 192.168.x.x to the lan interface of the router, and to
> the linux bux, and activate NAT on the router, i'm able to ping
> everything...
> but i need to come from the outside into the linux box (it's one machine
> only at the moment, but may be they can become 3 separate computers)
>
>
> many thanks
>
> Marco

Marco,

Building on the this many-to-one/dynamic NAT configuration, you need
to add static NAT. So if you start a connection out, the router
translates the source IP address from 192.168.x.x to the x.x.x.186.
When a return packet comes in, it translates the destination back into
192.168.x.x.

You need for the router to take in inbound connection to x.x.x.188 and
translate it into 192.168.x.x. Then the return packet will get
translated from 192.168.x.x to x.x.x.188.

Hope this helps,
-Dean