Another question..... In the Neuvector UI -> Policy -> Admission Control I created a rule that DENY deployments in default namespace. And this works perfectly. My question is, where is this saved? Is it just writing a yaml file somewhere and applying it?

Policies are saved in the controller config in memory. You can use persistent storage to save controller configuration automatically when node goes away or export configuration manually. Here’s a screenshot of how to export a backup.

Thank you