Re: ip masquerading/subnets

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bruce wrote:
> hi john...
> 
> i might be missing/lost some emails... so let me start at the very
> beginning!! bear with me if you find yourself repeating something you've
> already stated...
> 
> my initial system (two boxes, nothing between them)
> 
> windows                       linux
> box1     ----- >>> ------      box2 >>>>>> (future separate lan box)
>   eth0    (wireless)      ath0      eth0
> 
> box1
> eth0 - 192.168.1.3
> 
> box2
> ath0 - 192.168.1.5
> eth0 - 192.168.2.5
> 
> from box1, i can ping 192.168.1.5
> from box1, i can't ping 192.168.2.5
> 
> from box2, i can ping box1 (192.168.1.3)
> 
> so, what do i/should i do to connect/ping box2/eth0 from box1?
> 
Unless your Windows box knows that 192.168.1.5 is the gateway to
192.168.2.5, it is not going to be able to ping it. It will send the
packets for 192.168.2.5 using the default route, and using the
default gateway. This is probably 192.168.1.1. But the router on
192.168.1.1 does not know what to do with it, so it does not send it
to 192.168.1.5 to be forwarded to 192.168.2.5. So you either have to
add a route to the windows box, or to the router. Chances are, the
linux box never "sees" the packets for 192.168.2.5, and in any case
the MAC address the packet is sent to is not for that machine. The
wireless box never sends the packets for 192.168.2.5 over the
wireless link.

But as I said before, you are trying to use the wrong tool for the
job. You would be much better off bridging ath0 and eth0 on the
Linux box, and putting everything on the 192.168.1.0 network.

Mikkel
-- 

A:  Because it messes up the order in which people normally read text.
Q:  Why is top-posting a bad thing?


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