Ingress Security

Ingress Controllers handle external traffic entering the Kubernetes cluster. Securing ingress traffic is essential to prevent unauthorized access, data leaks, and API abuse.

Best Practices for Ingress Security

1. Enforce TLS Encryption

• Use Let's Encrypt with Cert-Manager to automatically issue TLS certificates.
• Enforce TLS termination at the ingress controller level.

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: secure-ingress
  annotations:
    cert-manager.io/issuer: "letsencrypt-prod"
spec:
  tls:
    - hosts:
        - example.com
      secretName: tls-secret
  rules:
    - host: example.com
      http:
        paths:
          - path: /
            pathType: Prefix
            backend:
              service:
                name: my-service
                port:
                  number: 443

2. Use Web Application Firewalls (WAF)

• Deploy Cloudflare WAF, AWS WAF, or ModSecurity to detect and block malicious traffic.
• Implement rate limiting to prevent DDoS attacks.

3. Restrict Allowed Hosts

• Define host rules to allow traffic only from specific domains.

By following these best practices, you can protect Kubernetes ingress traffic and prevent external threats from reaching internal services.