Authorized DDoS simulations

Find the breaking point before attackers do.

ddos-simulation.com launches bounded, authorized DDoS simulations against infrastructure you own. Rehearse real attack techniques across Layers 3–7, watch service health in real time, and stop the instant you have your answer.

  • 130attack techniques
  • 50mshealth sampling
  • Multi-clouddistributed traffic
  • < 1s*emergency auto-abort
portal.ddos-simulation.com/tests/248/live running

Q3 resilience test

Checkout API resilience check

app.example.com · Layer 7 + network sweep

Expected3
Provisioned3
Connected3
Slowloris simulation 01:12 remaining
Live latency · HTTPS 128 ms
2xx 4,812 3xx 12 4xx 3 5xx 0

Illustrative preview — sample data, not a live test.

  • Ownership verified
  • Scope reviewed
  • Authorized
  • Traffic limits locked
  • Live monitoring and abort controls

The simulation library

Simulate 130 DDoS techniques across OSI layers, protocols, and CVEs.

DDoS simulation testing rehearses a real attack against infrastructure you own so you can measure how it holds up. Browse our featured techniques below or explore our complete 130-simulation catalog across Layers 3–7, HTTP/2/3 control frames, API gateways, and 2024–2026 CVE resilience checks. Explore all 130 simulations

L4

SYN flood

Sends bounded, unspoofed TCP SYN packets without completing handshakes to test SYN backlog queues, SYN cookies, and edge firewall state table limits.

How we simulate it
L7

HTTP/2 Rapid Reset

Opens and immediately cancels multiplexed HTTP/2 streams at high velocity (CVE-2023-44487 pattern) to evaluate server-side stream recycling and cancellation CPU overhead.

How we simulate it
L7

HTTP / HTTPS request flood

Generates high-concurrency Layer 7 request traffic across HTTP/1.1, HTTP/2, and HTTPS to measure web server worker capacity, reverse proxy throughput, and response latency under load.

How we simulate it
L7

Slowloris connection starvation

Holds HTTP connections open with a slow trickle of partial header bytes to tie up worker threads and connection pools without generating high bandwidth.

How we simulate it
L7

TLS handshake exhaustion

Dispatches rapid TLS handshakes and session resumption requests to measure asymmetric cryptographic compute limits, handshake timeouts, and certificate validation bottlenecks.

How we simulate it
L4

UDP volumetric flood

Streams high-throughput UDP packet batches across target ports to validate transit bandwidth capacity, router packet forwarding rates, and edge ACL filtering.

How we simulate it
L7

HTTP/2 CONTINUATION flood

Streams continuous unclosed CONTINUATION frames on an unfinished HTTP/2 header block to evaluate parser frame limits, buffer allocation, and memory safety (CVE-2024-27316 class).

How we simulate it
L4

DNS query flood (Water-torture)

Floods recursive and authoritative DNS servers with pseudo-random subdomain queries (NXDOMAIN) to bypass edge caches and force full upstream lookups.

How we simulate it
L4

QUIC / HTTP3 Initial flood

Emits cryptographically valid QUIC Initial packets over UDP, forcing origin servers to allocate connection state, perform key derivation, and process stateless resets.

How we simulate it
L7

Slow POST (R.U.D.Y.)

Sends HTTP POST requests with large Content-Length headers and transmits the body in slow 1-byte increments to exhaust backend application request execution threads.

How we simulate it
L7

TCP Zero-Window starvation

Establishes connections, requests large responses, and shrinks the TCP receive window to zero to tie up origin send buffers and kernel socket resources.

How we simulate it
L7

WebSocket connection exhaustion

Completes valid WebSocket upgrade handshakes and holds thousands of duplex connections open to test socket table limits, memory overhead, and heartbeat timeouts.

How we simulate it
L7

HTTP/2 PING & control flood

Streams continuous streams of HTTP/2 PING and empty SETTINGS control frames to test frame rate-limiters, event loop contention, and control-frame CPU overhead.

How we simulate it
L4

TCP connection flood

Opens and instantly resets full 3-way TCP connections at scale to saturate stateful firewalls, load balancer conntrack tables, and OS socket descriptors.

How we simulate it
L7

GraphQL query complexity check

Submits deeply nested and recursive GraphQL query documents to test query depth analyzers, AST parser limits, and resolver execution budgets under adversarial payloads.

How we simulate it

Looking for the complete 130-technique simulation catalog?

Our platform includes 130 distinct simulation techniques spanning L3–L7 volumetric floods, HTTP/2 & HTTP/3 protocol mechanics, API gateways (Kong, APISIX, Spring Cloud Gateway, Tyk, KrakenD), and recent 2024–2026 CVE resilience checks across Apache, Nginx, Tomcat, Envoy, HAProxy, Varnish, Traefik, Node.js, Go, Python, BIND, and GraphQL.

A guided, reviewed engagement

From your plan to a live test, reviewed at every step

  1. 01 Your team

    Build or request a plan

    Compose a timeline of attack techniques yourself using our interactive builder, or request a custom plan and tell us what you need — we'll design it. Name the target you intend to test; no verification needed just to plan.

  2. 02 We review

    We review scope & quote

    We review the delivery path across your cloud, hosting, CDN, network, DNS, and mitigation providers. We coordinate any required provider reviews with you before confirming the timing and one-off price.

  3. 03 Your team

    Review quote & sign

    Once accepted, review the confirmed price and schedule, have an authorized representative sign the Rules of Engagement, and verify domain ownership via HTTPS. Strict safety gates ensure nothing runs until those authorizations are complete.

  4. 04 We execute together

    Joint war room & execution

    We coordinate with upstream providers and join your team in a shared Slack/Teams channel or live war room bridge. Together, we execute the simulation with stepped ramp-ups, real-time commentary, and automatic abort safeguards.

Timeline builder

Compose the assessment, then request a quote.

Drop any of the 130 techniques onto a timeline, set each one's rate and duration, and run them back-to-back or overlapped. Start from a preset or build from scratch — when the plan is ready, request a quote for our review.

Verified target app.example.com verified
Example plan
  1. 00:00
    HTTPS flood L7 3m

    Ramp a Layer 7 request flood against the origin.

  2. 03:00
    Slowloris L7 3m

    Hold connections open with a slow trickle of keep-alives.

  3. 06:00
    SSL/TLS exhaustion L6 2m

    Pressure the handshake with full TLS negotiations.

  4. 08:00
    SYN flood L4 3m

    Stress the SYN backlog and connection-tracking tables.

  5. 11:00
    UDP flood L4 2m

    Probe UDP ingress filtering and bandwidth headroom.

  6. 13:00
    HTTP/2 Rapid Reset L7 2m

    Rapidly open and cancel multiplexed streams to stress reset handling.

6 commands 15m window Layers 4–7
Open the builder in the portal

Live health monitoring

Watch the service breathe under load.

Safe HTTPS observations on your verified domain — as often as every 50 ms, across up to eight paths at once, with no redirects followed and private and loopback addresses blocked. Latency and response codes stream to charts you can zoom and pan, every command marked on the timeline. Set error-rate, latency, or status-code thresholds and the test aborts itself the moment your service crosses them.

Live monitoring · app.example.com 10:14:03 UTC
Response latency124 ms
Start+5 minNow
Availability99.98%
  • Endpoint responsive
  • Latency within threshold
  • Workers inside limits
HTTP responses24,860
2xx98.7% 3xx0.8% 4xx0.3% 5xx0.2%
Command timeline01 / 06
  1. HTTPS flood running 05:00 left
  2. SSL/TLS exhaustion queued
  3. Slowloris queued
  4. SYN flood queued

Non-negotiable safeguards

A stress test, never a weapon.

ddos-simulation.com exists for owners and authorized operators. We collaborate directly with your team in a shared live war room or Slack/Teams channel, and coordinate with infrastructure providers (Cloudflare, AWS, Azure, Google Cloud, DigitalOcean, and others) to confirm that the agreed test fits provider rules. If a required authorization cannot be confirmed, the test does not run.

How our controlled testing works

Verified and authorized targets

Each worker receives one verified domain and rejects a plan for anything else. Provider notices, approvals, and limits are recorded in the engagement scope where required.

Per-domain limits

Every verified domain tests inside its own rate, concurrency, and worker limits — scaled to its validation level, never a shared free-for-all.

Automatic abort

Set error-rate, latency, or status-code thresholds and the test stops itself the moment your service crosses them.

Full audit trail

Logins, approvals, edits, worker lifecycle, and results stay visible to the workspace.

Priced per engagement

Every test is quoted for exactly what it is.

No subscription, no credit packs, no upfront pricing. Build a plan (or ask us to design one), request a quote, and we price the specific engagement. You review the one-off price and sign the Rules of Engagement only after you accept it.

Build it yourself

You know what you want

Compose the timeline, then request a quote.

  • Drag-and-drop timeline builder
  • 130 techniques across Layers 3–7
  • Configure live health checks and auto-abort
  • Save it as a plan and request a quote
Build a test plan
Ask us to design it

Prefer a hand?

Tell us what to test and we'll build the plan.

Describe the target, your goals, and a rough scale and preferred window. We design the engagement, price it, and confirm the timing with you — then you sign the Rules of Engagement, and we run it.

  1. 1
    Request a quoteBuild a plan or ask us to design one.
  2. 2
    We price & you approveA one-off price for that exact engagement.
  3. 3
    Sign & we run itVerify the domain; both required before it runs.
Request a custom plan

The whole platform

A self-service portal built for responsible teams.

Multi-tenant workspaces

Invite members, assign roles, and keep every test scoped to your organization.

Domain verification

HTTPS proof of ownership gates every target before it can be scheduled.

Test history & reports

Review past simulations, compare resilience over time, and download executive PDF reports for auditors.

Audit log

A complete, tenant-scoped record of logins, changes, and test lifecycle events.

Quotes & invoices

Each engagement is quoted, agreed via digital signature, and invoiced — with a complete workspace record.

Joint war rooms & support

Collaborate via shared Slack/Teams channels or live war rooms during tests, and track requests via tickets.

What you walk away with

More than a dashboard — a report you can hand over.

Every engagement leaves something you can act on and share: a live view while it runs, a resilience report when it finishes, and a complete record afterward.

A live health view

Watch latency, response codes, and the worker fleet in real time as each command runs — and stop the instant you have your answer.

A shareable resilience report

Every completed test produces a downloadable PDF assessment with a per-command methodology breakdown — ready to hand to stakeholders, auditors, or your provider.

A complete, recorded result

Recorded latency, status codes, and the full worker timeline stay in your workspace, alongside a tenant-scoped audit trail of approvals and changes.

Frequently asked questions

Know exactly what happens before you test.

Clear answers on authorization, safeguards, pricing, and how an engagement runs.

Still have a question? Contact us
What is ddos-simulation.com?

ddos-simulation.com plans and runs authorized, bounded DDoS simulation tests against infrastructure you own. You build a test plan (or ask us to design one) and request a quote; we price and accept the engagement, you sign the Rules of Engagement and agree to the quote, then we schedule it and you watch live health metrics and stop the moment you have your answer.

Is it legal and safe to use?

ddos-simulation.com is built only for owners and authorized operators. Before a test runs, we verify the domain, map the cloud, hosting, CDN, network, DNS, and mitigation providers in the delivery path, and help coordinate any required notice or approval with you and the provider. That can include Cloudflare, Amazon Web Services (AWS), Microsoft Azure, Google Cloud, DigitalOcean, and others. Provider rules differ; if required authorization cannot be confirmed, the test does not run. Tests use our own legitimate load-generation machines and stay inside approved per-domain limits. Read how authorization and provider coordination work.

Which attack techniques can I simulate?

130 techniques across Layers 3–7: HTTP check, HTTPS flood, SYN flood, TCP connection flood, UDP flood, TCP flag flood, established connection flood, Slowloris, Slow POST, slow read, ICMP flood, SSL/TLS exhaustion, HTTP/2 rapid reset (CVE-2023-44487), HTTP/2 CONTINUATION flood, HTTP/2 MadeYouReset, a QUIC/HTTP3 Initial flood, a DNS query flood, and WebSocket exhaustion. Each reproduces a real failure mode and runs from our own legitimate load-generation machines, never a botnet.

How much does it cost?

Each engagement is priced individually. You build a plan (or ask us to design one) and request a quote; we review the scope and set a one-off price for that specific engagement. There is no subscription and no upfront pricing — you agree to the quoted price by signing the Rules of Engagement before the test is scheduled. Invoicing is issued upon completion. The price does not just depend on the techniques used, but also the infrastructure the target runs on, and the effort it takes to gain approval from infrastructure providers.

Do I need to verify domain ownership before testing?

You can build a plan and request a quote without verifying first, but ownership must be verified before the test runs. Verification is self-service and can take minutes over HTTPS.

What is the difference between load testing and DDoS simulation?

We offer both load testing and DDoS simulations. Load tests only generate legitimate traffic, whereas DDoS simulations mimic attack scenarios. DDoS simulations often have vastly different requirements from infrastructure providers.

Can a test stop itself if my service starts failing?

Yes. Live monitoring samples service health as often as every 50 ms across up to eight paths. Set error-rate, latency, or status-code thresholds and the test aborts itself the moment your service crosses them. You can also stop any test manually or trigger it with a single API call at any time. Infrastructure providers are also given permission, through our API, to cancel any tests involving their infrastructure at their discretion.

How do we collaborate and coordinate during a live simulation?

Every engagement includes a dedicated joint war room. We set up a shared Slack or Microsoft Teams channel or join a live voice/video bridge with your SRE, DevOps, and SOC teams. This allows real-time metric cross-referencing, mutual go/no-go checks before increasing traffic tiers, and instant verbal pause authority throughout the exercise.

Ready when you are

Rehearse the worst day. At a time of your choosing.

Build a plan in the browser now — no account needed to draft one — or ask us to design one. Create a workspace to request a quote; we price it, confirm timing, and run it.