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The Cyber Human Ecosystem for Engaged Security Education (CHEESEHub) is an open web platform that hosts community-contributed containerized demonstrations of cybersecurity concepts. In order to maximize flexibility, scalability, and utilization, CHEESEHub is currently hosted in a Kubernetes cluster on the Jetstream academic cloud. In this short paper, we describe the security model of CHEESEHub and specifically the various Kubernetes security features that have been leveraged to secure CHEESEHub. This ensures that the various cybersecurity exploits hosted in the containers cannot be misused, and that potential malicious users of the platform are cordoned off from impacting not just other legitimate users, but also the underlying hosting cloud. More generally, we hope that this article will provide useful information to the research computing community on a less discussed aspect of cloud deployment: the various security features of Kubernetes and their application in practice. |
