ZTA

Definition

Zero Trust Architecture (ZTA) is a security model that assumes no implicit trust is granted to any user, device, or system, regardless of whether it is inside or outside the network perimeter. It requires strict identity verification and continuous authentication for every access request, leveraging principles like least privilege, micro-segmentation, and real-time threat detection to protect resources and data.

Secure Settings Example

apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: default-deny-all
  namespace: default
spec:
  podSelector: {}
  policyTypes:
  - Ingress
  - Egress
  ingress: []
  egress: []

This Kubernetes NetworkPolicy denies all ingress and egress traffic by default, enforcing a zero trust approach by requiring explicit policies to allow specific traffic.

Insecure Settings Example

apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: allow-all
  namespace: default
spec:
  podSelector: {}
  policyTypes:
  - Ingress
  - Egress
  ingress:
  - {}
  egress:
  - {}

This configuration allows all ingress and egress traffic, which contradicts zero trust principles by implicitly trusting all network communications without verification.