Zero Trust Implementation

Identity Management

AWS Cognito Integration

resource "aws_cognito_user_pool" "main" {
  name = "zero-trust-pool"
  
  password_policy {
    minimum_length = 12
    require_numbers = true
    require_symbols = true
    require_uppercase = true
  }

  mfa_configuration = "ON"
  
  software_token_mfa_configuration {
    enabled = true
  }
}

resource "aws_cognito_identity_pool" "main" {
  identity_pool_name = "zero-trust-identity"
  allow_unauthenticated_identities = false
}

Network Security

Zero Trust Network Access

apiVersion: networking.istio.io/v1alpha3
kind: AuthorizationPolicy
metadata:
  name: zero-trust-policy
spec:
  selector:
    matchLabels:
      app: secure-service
  action: ALLOW
  rules:
  - from:
    - source:
        principals: ["cluster.local/ns/*/sa/authorized-service"]
        requestPrincipals: ["https://accounts.google.com/*/"]
    to:
    - operation:
        methods: ["GET"]
        paths: ["/api/secure/*"]
    when:
    - key: request.auth.claims[groups]
      values: ["secure-access-group"]

Workload Identity

GCP Workload Identity

apiVersion: v1
kind: ServiceAccount
metadata:
  name: workload-identity-user
  annotations:
    iam.gke.io/gcp-service-account: [e-mail]
---
apiVersion: iam.cnrm.cloud.google.com/v1beta1
kind: IAMServiceAccount
metadata:
  name: gsa-name
spec:
  displayName: "Workload Identity Service Account"

Access Control

Azure RBAC Integration

apiVersion: azure.microsoft.com/v1beta1
kind: AzureIdentity
metadata:
  name: pod-identity
spec:
  type: 0
  resourceID: /subscriptions/<id>/resourcegroups/<rg>/providers/Microsoft.ManagedIdentity/userAssignedIdentities/<name>
  clientID: <clientID>
---
apiVersion: azure.microsoft.com/v1beta1
kind: AzureIdentityBinding
metadata:
  name: pod-identity-binding
spec:
  azureIdentity: pod-identity
  selector: azure-pod-identity

Best Practices

1. Authentication

   • Multi-factor authentication

   • Identity federation

   • Just-in-Time access

   • Session management

2. Authorization

   • Policy-based access

   • Attribute-based control

   • Dynamic permissions

   • Least privilege

3. Network Security

   • Microsegmentation

   • East-west traffic control

   • North-south protection

   • API security

4. Monitoring

   • Access logging

   • Behavior analysis

   • Threat detection

   • Compliance reporting