According to the web search results, the policy that should be used to meet this requirement is an Isolation Environment Policy. An Isolation Environment Policy is a type of security policy that can be created in Prism Central using Flow Network Security, which is a feature that provides microsegmentation and network security for Nutanix environments1. An Isolation Environment Policy allows the administrator to isolate a group of VMs from another group of VMs based on their categories, and block all traffic between them regardless of direction2. This policy can be useful for creating isolated environments for testing, development, or compliance purposes2.