One misconfigured namespace, and the entire compliance posture bled risk into the network. Kubernetes Network Policies are the guardrails. For SOX compliance, they are non‑negotiable.
SOX demands control, auditability, and proof. In Kubernetes, control means defining exactly which pods can talk to which services. Without Network Policies, every pod has default open communication. That is a direct threat to segregation of duties and data integrity rules outlined in Sarbanes‑Oxley.
A strong Kubernetes Network Policy strategy begins with:
- Deny‑all ingress and egress by default
- Allow traffic only for necessary workloads
- Namespace isolation for regulated components
- Logging every policy change for audit trails
SOX compliance auditors expect evidence. Network Policies act as evidence when paired with cluster‑level logging. Map each compliance control to a policy. Document it in code. Version control the definitions. This aligns Kubernetes with SOX Section 404 internal control requirements.