What’s New in OpenShift 3.5: Network Policy (Tech Preview)

In OpenShift 3.5 we’ve introduced Kubernetes Network Policy as a Tech Preview feature to improve the way we configure allowable traffic between pods. Put simply, Network Policy is an easy way for Project Administrators to define exactly what ingress traffic is allowed to any pod, from any other pod, including traffic from pods located in other projects.
Quelle: OpenShift