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VMWare Virtual Machines Networking Problems

Posted on 2004-08-16
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Last Modified: 2013-11-15
Hi all,

I have been tasked with taking over a lab that was set up for a penetration testing training exercise.

I have a VMware GSX Server 3.0 on A dell poweredge 2650 with 4 Windows 2000 Professional/Server virtual Machines configured for bridged networking on a Linux Redhat 9.0 host. The poweredge is connected to a 4/port LInksys Hub. These machines are going to be the target machines for the exercise.

In another area in the lab, I have 3 labtops with Vmware Workstation 2.x with Windows 2000 Pro virtual machines configured on a Redhat 7.X host. Bridged networking is configured. Each of these labtops are plugged into the same 4 port Linksys hub that the poweredge is plugged into. These machines will be used by the attackers.

The ip address of the Redhat 9.0 host on the dell 2650 is 10.0.1.21. We created this class A address for the host, because we did not want it to be able to be attacked during this training exercise.  All of the virutal machines on the del 2650 have ip address in the range of 192.168.1.1/24.  The virutal machines on the del 2650 can communicate to each other.

The ip address of the Linux 7.x hosts on the labtop and virtual 2k machines on labtop all have ip address in the range of 192.168.1.1/24. The virtual OS and host OS can communicate to each other on the labtop.

The problem I have is that none of the host/virtual boxes on labtop and communicate to virtual machines on dell 2650 or vice versus. I have green lights on my hubs, so I don't know what the problem is?
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Question by:annointed3
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by:doneck8
ID: 11814261
I think the problem may be the Dell is in a different subnet.  The Virtual Machines may have 192.168.x.x addresses, but they would be using the network card to communicate with the laptop.  If the laptop has a 192.168.x.x ip you need a router, or manually update the routing tables on the machines.  All virtual machines aside, can the Dell 2650 access the laptop and vice versa.  I'm a little out of my element here, but Linux should have a ping or ping like command.  If the two machines can't find each other, neither will their respective Virtual machines.
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by:doneck8
ID: 11814282
Or change the laptop's IP to a 10.x.x.x number.
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annointed3 earned 0 total points
ID: 11815187
I found out what the problem is. The dell 2650 has 2 nic cards. The cat 5 cable was plugged in the 2nd nik card instead of the 1st nic card. Once I plugged the cable into the 1st nic card, I was able to communicate between the labtop and the dell.

Now, I don't know what I should do in this situation, since I answered my own question. I do appreciate the other folks taking time out to attempt to provide a solution. Any suggestions?

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