Figure 1: The Customer’s VM Network Topology Hillstone CloudHive Secures Private Cloud for a Large Provincial Government The Customer A large provincial government who runs a private cloud with over 30 servers and over 300 virtual machines running VMWare ESXi 5.5 and 6.0. The cloud platform primarily provides web hosting and e-government services to its 50 plus subsidiary govern- ment departments located in disparate places. The customer’s VM network topology is shown in Figure 1. There is no segmentation or isolation among different tenants; weather forecast bureaus, statistics bureaus, police departments, and investment organizations, etc. all share the same network proper- ties. What is even more riskier is to have web servers, application servers, and database servers all

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