Assume that you use Microsoft Virtual Machine Converter (MVMC) 3.0 to convert virtual machines and put them into Microsoft Azure. If the MVMC 3.0 server accesses the Internet through a proxy server, make sure that the following URLs can be accessed from the MVMC 3.0 server:
You should also allow the IP addresses that are mentioned in Azure Datacenter IP address ranges. Additionally, make sure that outbound HTTPS (443) traffic is allowed. Finally, white-list the IP ranges of the Azure region that you plan to use.