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Windows 7: How to enable NAT on Windows 7...

13 Feb 2011   #1
chandramohanp

Windows 7 x64
 
 
How to enable NAT on Windows 7...

I am not able to use netsh routing commands on WIndows 7. These commands work on Windows XP. Upon research I found that Windows 7 does not support routing commands. On Vista there was workaround by using "netsh add helper ipmontr.dll" and "netsh add helper ippromon.dll" but these commands does not work on Windows 7.

Can anyone help me to setup NAT on Windows 7. One more question, if NAT is disabled on WIndows 7, How does VirtualBox use NAT for guest PC to communicate with Host PC network machines.

Thanks
Chandra


My System SpecsSystem Spec
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13 Feb 2011   #2
logicearth

Windows 10 Pro (x64)
 
 

You need Windows Server 2008 R2.
A router is easier....however.
My System SpecsSystem Spec
13 Feb 2011   #3
chandramohanp

Windows 7 x64
 
 

So are you saying I cannot enable NAT on Windows 7 but should install Windows Server 2008 R2 to have NAT. If so, then how is VirtualBox working.

Also what do you mean router. How can I install virtual router without using NAT.

Thanks
Chandra
My System SpecsSystem Spec
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13 Feb 2011   #4
logicearth

Windows 10 Pro (x64)
 
 

VirtualBox has its own software that handles emulating NAT.

I think we need more information on what it is you are trying to do.
My System SpecsSystem Spec
14 Feb 2011   #5
chandramohanp

Windows 7 x64
 
 

My requirement

Say, Machine1 is in network N1, Machine2 is in network N1 and N2. Machine3, Machine4 is in network N2

In the above setup Machine1 should be able to talk to both Machine3 and Machine4 via Machine2. In XP we used to achieve this by using NAT routing and port forwarding. Any communication to port P1 on Machine2 from network N1 will be forwarded to Machine3. Any communication to port P2 on Machine2 from network N1 will be forwarded to Machine4. So any time any machine from N1 talks to Machine2:P1, the data is forwarded to Machine3, any data to Machine2:P2 will be forwarded to Machine4.

How to achieve this in Windows 7
My System SpecsSystem Spec
14 Feb 2011   #6
logicearth

Windows 10 Pro (x64)
 
 

You don't achieve it using Windows 7. You'll either need Windows Server 2008.
Or the easier and probably cheaper option is just to use a router.

With a router you don't need the crazy middle-man computer Machine2, Machine1 could just talk to Machine3 or 4 directly and the router will handle all the, well routing. The inverses is true as well. That is the job of the router, connect and translate between two networks.
My System SpecsSystem Spec
15 May 2012   #7
abed19919

windows 7 32bit
 
 

hi ....... you can use GNS cisco and add the router you want ..... then you will have nat on your windows 7
My System SpecsSystem Spec
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 How to enable NAT on Windows 7...




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