I spent time improving security in a Nutanix environment by using Flow to build micro segmentation. The goal was to keep the setup simple, reduce east-west traffic, and give each tier only the access it needs.
After I enabled micro segmentation in the settings, Flow created a new container that I used to organize the environment. The first step was to build a clean set of categories. I went to the categories menu, selected AppType, and added a new value for the application. In this case, I added a value for TaskMan. I used it as a system category that helped me group and manage the virtual machines.
I then created the rest of the categories for the application. These categories helped me label each VM by role. This made the later policy work much easier.
The next step was to create a security policy. Flow lets you choose the policy type and apply it to the categories you built. For the web tier, I set a rule that allowed all inbound traffic to the web servers. I also made sure the web tier could talk only to the worker tier. This kept the communication path clean and reduced unnecessary exposure.
I saved the policy and placed it in monitor mode. After I reviewed the traffic and confirmed that nothing unexpected appeared, I enforced the policy. Flow makes this simple. You open the policy, select actions, and apply it.
I also used Flow to isolate development from production. I created a new policy with the isolate option. I tagged all virtual machines with the correct category, either DEV or PROD. This helped me ensure the two environments stayed fully separated.
This work improved the structure and security of the environment. It also showed how micro segmentation can be introduced without adding complexity. Flow gives you a clear path to build, monitor, and enforce traffic rules in a way that fits real workloads.
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