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Given the following requirements:
1 - a virtual dev domain
2 - all VMs can access to the Internet (e.g. for Windows Update)
3 - other physical hosts cannot access the virtual network
What is the best way to achieve this?
In the recent past I put everything on a single VM. This usually worked, but also resulted in what felt like a lot of rework each time the VM needed to be rebuilt. Also, the consensus view seems to be to avoid multi-homed domain controllers.
Originally, I ran separate VMs for a domain controller, a NAT server and any other development servers. This resulted in a practical minumum of 3 VMs running at a time which seemed high.
Is there a better way to tackle this? Is there a preferred configuration among developers for this case?