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Separate NAT device in VMWare 6.5

Posted on 2009-02-13
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Last Modified: 2012-05-06
Hi all!
I have 3 VM that are running on the same host using VMWare Workstation 6.5

All of these VM need NAT interface because I use Port Forwarding...
Each VM have it's own tcp port for separate dedicated application (web, tse, other tse)

All work fine except that the 3 VM are on the same Subnet meaning that can "see" each other...
So I wonder if it's possible to create a second nat interface, thus I can put 2VM on the same subnet and the ,other on a dedicated.

I have seen that this is pretty easy to create a new interface however it seems that it is only possible to bind NAT to only one interface.

Does anyone know something about that?

Thanks
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Question by:sibliege
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Expert Comment

by:za_mkh
ID: 23637731
Can you provide a simple diagram of what you are trying to achieve? I ask this because your post doesn't really clarify the traffic direction between your various VM's, etc
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Author Comment

by:sibliege
ID: 23648130
Sure, here it is....
vmware-nat.jpg
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za_mkh earned 2000 total points
ID: 23648532
Ah, ok.
So VM3 which needs to be NATTED but needs to be seperated from VM1 + 2.
The only way I can see you achieving this using VMWare workstation is to do the following
1) Move VM3 to it's own VMNet e.g VMNet4
2) Create a new VM (VM4) using Vyatta (www.http://www.vyatta.com/downloads/index.php)
When configuring VM4 you assign it two network cards so that it joined to both VMNet8 and VMNet4. Then you configure the vyatta network appliance to NAT data destined for VM3 . So for VM3 there will sort of be double NATTING in a way. But it will achieve your goal of isolating VM3 from the other 2 guest VMs.
The Traffic flow in my mind would be as follows:-
External -> Vyatta External Interface (connected to VMNet8) -> Vyatta Internal Internal Interface (connected to VMNet4) ->VM3
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Expert Comment

by:za_mkh
ID: 23648553
The network schematic would be something like you see in the following link:
http://kneew.com/node/32
Obviously it will apply for VMWare WorkStation 2.
 
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Author Comment

by:sibliege
ID: 23657339
Ok I will try, so, now way to do this natively in VMWareN
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