ISC2 Certified Secure Software Lifecycle Professional (CSSLP) Practice Question

While designing a production Kubernetes cluster for a payment-processing platform, you must give operations staff access to the kube-api server and occasional SSH access to worker nodes. Policy states that management traffic must be isolated from customer workload traffic and continuously monitored. Which architectural choice BEST satisfies these requirements while honoring the principle of least privilege?

  • Keep management ports on the production network but restrict them with host-based firewall rules to specific administrator IP addresses.

  • Expose the Kubernetes dashboard on the existing public load balancer over TLS with client certificates for administrators.

  • Tunnel all management commands through the application's public REST API using HTTPS to avoid opening additional ports.

  • Place all management interfaces on a dedicated, isolated subnet reachable only through a hardened bastion host protected by multi-factor authentication.

ISC2 Certified Secure Software Lifecycle Professional (CSSLP)
Secure Software Architecture and Design
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