Re: two subnets...

[Pawel Zawora <pzawora@interia.pl>]

I need separate 3 foreign machines (security reason - firewall between 
subnets is required).
I cannot divide one 128 pubic IPs  subnet...
Foreign machines have to use public IPs....

Pawel

Grant Taylor wrote:
> On 07/30/07 05:31, Pawel wrote:
>> I need to remove 3 machines from one subnet (192.168.0.0/25) to new 
>> physical subnet.  I want to add new network card to my linux router 
>> and create new subnet (192.168.0.96/29).
>
> Ok...
>
>> My  issuse:  I cannot touch any IPs  of any machine ....
>
> Ah.  Here in lies the rub.
>
>> how to do it?  What is the best solution? (proxy arp, additional 
>> routing table?)
>
> Do you really need a new subnet or just a new physical network?  If 
> the later is the case, add a new network card to the Linux router and 
> bridge that new card with the old card that the computers were on.  
> Once you have the bridge in place, move the IP address that was 
> assigned to the old network card to the bridge interface.  This will 
> allow the old machines to function as they were as well as the 
> machines that you moved.  If you do not want the old machines to be 
> able to talk to the ones that you moved, use an EBTables (Bridging) 
> rule to block traffic from passing from the old NIC to the new NIC 
> wile still allowing them to get to the router the way they need to.
>
> This works *GREAT*!  I have used it a lot of places and have been very 
> happy with the results.
>
>
>
> Grant. . . .
>
>
>


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