Are customers allowed to run DDoS simulations against AWS infrastructure?

Yes. Under the AWS DDoS Simulation Testing Policy, customers (or authorized security testing vendors) may conduct simulations against their own dedicated AWS resources without prior approval for standard bounded Layer 7 tests, or through an authorized DDoS Simulation Request form when testing AWS Shield Advanced with the Shield Response Team (SRT).

What is the difference between AWS Shield Standard and Shield Advanced testing?

AWS Shield Standard provides automatic inline protection against common Layer 3/4 infrastructure attacks. Testing AWS Shield Advanced evaluates automatic Layer 7 application DDoS mitigation, tailored WAF rule engagement, custom health check routing, and financial cost protection against scaling spikes.

Can DDoS testing cause unintended AWS billing spikes?

Uncontrolled load tests can trigger runaway Auto Scaling Groups and high data-transfer costs. ddos-simulation.com uses strictly capped traffic volumes, short graduated burst phases, and sub-second health-threshold aborts to prevent unintended scaling and cost overruns.

AWS DDoS Simulation Testing Guide

1. The AWS DDoS Simulation Testing Policy

AWS Policy Compliance

DDoS simulations against AWS must only target accounts and endpoints owned by your organization. Tests must not impact neighboring AWS tenants, degrade shared hypervisors, or exploit DNS amplification against third-party open resolvers.

AWS recognizes that resilience testing is essential for well-architected cloud systems. AWS maintains clear testing terms:

Permitted Targets: Dedicated Amazon EC2 instances, Application Load Balancers (ALBs), Network Load Balancers (NLBs), Amazon CloudFront distributions, Amazon Route 53 hosted zones, and Amazon API Gateway endpoints belonging to your account.
Prohibited Actions: Port scanning against shared cloud infrastructure, DNS reflection/amplification floods utilizing uncoordinated public resolvers, and attacks exceeding pre-agreed scope limits.
Coordination Workflow: For organizations with AWS Shield Advanced seeking formal engagement with the AWS Shield Response Team (SRT), a DDoS Simulation Request can be submitted through the AWS Support Center prior to large-scale multi-vector exercises.

2. Validating AWS Shield Advanced & Automated Mitigation

While AWS Shield Standard provides automatic defense against common L3/L4 volumetric floods, enterprise workloads relying on AWS Shield Advanced require validation across key defensive mechanisms:

Defensive Layer	Simulated Attack Vector	Expected Resilience Outcome
Automatic Layer 7 Mitigation	High-concurrency HTTP/HTTPS request floods with dynamic query parameters.	Shield creates temporary automated WAF rules to block malicious traffic patterns without dropping legitimate customer traffic.
Rate-Based WAF Rules	Targeted endpoint flooding against login and checkout API paths.	AWS WAF rate limiting triggers at configured thresholds (e.g. 100 req/5 min per IP) and returns HTTP 429 or CAPTCHA/Challenge.
Health-Based Route 53 Failover	Origin compute exhaustion simulation.	Route 53 health checks detect latency degradation and seamlessly steer traffic away from the impacted availability zone or region.
SRT Notification & Escalation	Graduated multi-vector attack combining SYN floods with Layer 7 complexity.	CloudWatch alarms trigger, notifying internal SOC engineers and initiating AWS SRT engagement runbooks.

3. CloudFront & AWS WAF Perimeter Stress Testing

Amazon CloudFront acts as the primary shield for modern web applications. However, misconfigured cache policies can allow attackers to bypass CloudFront's cache and saturate origin servers:

Cache-Busting Query Floods: Generating random query strings (`?cb=12345`) tests whether CloudFront cache-behavior settings forward unnecessary traffic to origin ALBs.
HTTP/2 & HTTP/3 Protocol Stress: Testing stream cancellation limits (HTTP/2 Rapid Reset CVE-2023-44487) and CONTINUATION frame handling at the CloudFront distribution edge.
AWS WAF Token & Challenge Evaluation: Measuring browser challenge latency under high concurrency to ensure benign users are not locked out during mitigation.

4. ALB, NLB & Target Group Connection Exhaustion

When attacks reach the regional load balancing tier, infrastructure weaknesses frequently stem from connection pool limits rather than bandwidth saturation:

Slowloris & Slow POST Floods: Holding hundreds of simultaneous HTTP connections open with partial headers tests ALB worker connection queues and HTTP keep-alive timeouts.
SYN Backlog Saturation: Testing NLB and EC2 listener state tables to verify that SYN cookies and TCP backlog queues absorb floods without dropping legitimate handshakes.
Backend Target Group Throttling: Observing whether high latency on downstream container clusters (ECS/EKS) causes ALB 502/504 Bad Gateway errors.

5. Guarding Against Economic Denial of Sustainability (EDoS)

In auto-scaling cloud environments, an unmitigated Layer 7 attack may not bring your application down—instead, it causes Auto Scaling Groups (ASGs) to scale up to maximum capacity, resulting in catastrophic cloud hosting bills (Economic Denial of Sustainability).

Our bounded testing methodology validates whether your WAF and Shield rules filter malicious requests before they trigger unnecessary horizontal pod or EC2 instance auto-scaling.

6. The Safe AWS Simulation Process

Cryptographic Domain & Resource Verification We verify ownership of every domain, ALB endpoint, and CloudFront distribution via HTTPS/DNS challenge prior to scheduling.
Rules of Engagement (RoE) & Threshold Agreement Strict maximum requests-per-second (RPS), bandwidth caps, and auto-abort health check endpoints are mutually agreed upon in writing.
Stepped Ramp-Up & Live War Room Bridge Traffic begins at low volume (10–20%) and increases in controlled stages while our engineers collaborate with your team on a live audio/video bridge.
Sub-Second Emergency Auto-Abort Independent health probes monitor your AWS endpoints every 50 ms. If latency or error rates exceed safety thresholds, all traffic halts in under 1 second.

Ready to validate your AWS resilience?

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7. Frequently Asked Questions

Do we need to notify AWS before every simulation?

For standard application-layer (Layer 7) stress tests and rate-limiting validation within normal traffic bounds against your own dedicated resources, advance AWS notification is generally not required under the current AWS Customer Support Policy for Penetration Testing. However, for large-scale tests or formal exercises involving AWS Shield Advanced SRT, submitting a DDoS Simulation Request in the AWS Support Center is recommended.

Can tests run against Amazon ECS, EKS, or Lambda?

Yes. By targeting public-facing ALBs, CloudFront distributions, or API Gateways in front of containerized microservices or serverless backends, simulations evaluate concurrency limits, cold starts, and database connection pooling.

How do we prove resilience to auditors after testing?

Upon completion of the simulation, our platform generates a timestamped, executive and technical resilience report detailing traffic rates, WAF mitigation effectiveness, error ratios, and latency graphs suitable for SOC 2, ISO 27001, and DORA audit evidence.

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