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Posted on 2009-12-22
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Last Modified: 2013-11-06
Hi, I have a just created a virtual machine on Hlyper-V, It is a windows 2008 server. This is sitting behind a firewall, Cisco PIX. I have applied an internal IP address, which I can ping on the internal network from another server. On the PIX, I have created Network Objects related to the internal and external IP address, I have applied a NAT Rule for this server.

My server will not connect to the internet. Not sure what I have missed but I have been looking at it way to long and cannot see wood for the trees.

If anyone has any ideas it would be great, this is kind of urgent so all suggestions are welcome.

Thank you
Carloc
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Question by:carloc
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Expert Comment

by:Netcraft
ID: 26113072
How did you configure networking in the VM? Can you ping the physical machine from the VM?

I had problems with networking to the physical machine (ping, browsing, etc). Hyper-V created a virtual network adapter on the physical machine with a strange IP-range.

Can you monitor the network-connection from the virtual machine to the outside, e.g. using the firewall. What does TRACERT say about the route?

Btw, I removed Hyper-V and installed VMWare Server, so I can't test this at home.
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Author Comment

by:carloc
ID: 26115035
Hi Netcraft,

I can ping the all other machines on the network both physical and virtual as well as the VM host.
If I run a tracert it stops at the gateway address which is my firewall (Cisco PIX) I have checked the access rules, which I setup like the other access rules, nothing seems amiss.
As the network is not a Domain, I am using NAT rules on the firewall to resolve an external IP to the internal IP address of the VM. This is the same for all machine in this location.
Running a Packet Trace produces the same results for NAT Rules on all machines.
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Netcraft earned 1500 total points
ID: 26118750
Can you monitor the Cisco PIX to see if packages get dropped, or is communicating at all with your VM?

Is it possible to take a physical machine and give it the same IP as your VM and see if this works?
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Author Closing Comment

by:carloc
ID: 31669209
Hi Netcraft,
Sorry for the delay in responding, the holiday break got in the way a little.
Using your suggestions I was able to determine that the VM Network card was not the problem. The problem was located at the firewall. I disable a VM server that was working and applied that IP address to my new VM and I was able to RDP and get internet access immediately.

I will now go back to the Firewall and check all the setting in place for this VM server.

Thanks for your help.
Carloc
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