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A bridged connection is by far the best method if it’s available. Using a bridged connection, the VM creates its own unique IP address and authenticates to the network as if it is some- thing completely separate. It can be a pretty surreal feeling to look at two distinct machines on one computer, each with their own network card. It still makes many of us say, ?Huh… well, that?s something.?Not only does the virtual machine mcitp course function on the same network, but outside resources from your network can individually access the logical address of that virtual machine and have no idea that it isn?t really a whole other entity. To them, it just looks like another host.
The least desirable method of connection is to allow connection only with the host. This creates an environment where VMs cannot communicate with the outside world and can run only in the virtual environment. Sometimes, this can be useful if you?d like to test a software program in a secure environment, because the two OS installations can still com- municate. But it has little other practical use and is thus less common.
Now that you understand how network cards can be physically shared through software implementation (try getting your head around that for a minute!), let’s talk a little bit about virtual networks and the role they play within Windows Server 2008 Hyper-V installations. When you first set up a Hyper-V installation, you have the option of creating special types of virtual networks. In total, there are three types: internal virtual networks, external virtual networks, and private virtual networks.
Using a virtual network, Windows Server 2008 Hyper-V can isolate communication mcitp: server administrator types with child machines. In the following sections, I’ll discuss in detail each type of network you can create.
The primary use of an internal virtual network is testing. Using an internal network, an administrator can create a network that will communicate between the child virtual server and the parent host server. This is convenient if you need to test applications because it isolates the communication that will be done within the virtual network. This enables the following types of communication:
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