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Products. DDoS protection, WAAP, CDN and DNS from one provider.

Start with the layer at greatest risk today. Network Security, Web Application Security and Application Performance come from one European provider.

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Choose your protection.

Stay reachable while attacks run.

On the protected traffic path, attacks are filtered before they reach your infrastructure and allowed traffic is forwarded to networks, prefixes and autonomous systems.

  • Filter attacks before your infrastructure
  • Protect networks, prefixes and autonomous systems
  • Return clean traffic to the origin
Explore Network Security
Network DDoS ProtectionAttack traffic ends in our network, clean traffic reaches you.NetFlow DDoS DetectorDetects attacks in your flow data, reroutes to Link11 when it matters.Clean TransitIP transit with built-in DDoS protection, for providers with high volumes.
Keep revenue flowing under attack.

Inspect web, API and automated traffic through one protection layer. Decisions can be traced back to the request.

  • A unified, fully managed Layer 7 security platform
  • Trace decisions back to the request
  • Fewer separate tools to operate
Explore Web Application Security
PlatformLink11 WAAPWeb Application Firewall, Web DDoS Protection, Bot Management and API Security on one platform.Part of Link11 WAAPWeb Application FirewallRule sets maintained by Link11 stop SQL injection, cross-site scripting and the rest of the OWASP Top 10.Part of Link11 WAAPWeb DDoS ProtectionLayer 7 floods look like real use. Link11 spots them by volume and sequence and stops them in front of your application.Part of Link11 WAAPBot ManagementCustomers and partners pass, scrapers and credential stuffing don’t.Part of Link11 WAAPAPI SecurityEvery endpoint gets its own policies, traceable to the call.
Stay fast when everyone shows up at once.

Secure DNS points the way. Secure CDN moves content closer to users. Together they keep access to applications fast and resilient.

  • Secure DNS and Secure CDN
  • Move content closer to users
  • Keep access to applications resilient
Explore Application Performance
Secure CDNContent comes from the nearest node, fast for users anywhere and with less load on your origin.Secure DNSDDoS-protected resolution worldwide, with your zones managed in Link11 or on your own server.
Enterprise

Complex requirements? Talk to us. For several teams, sites and environments, we tailor scope and operation to your architecture.

  • Scope and pricing tailored to you
  • Managed onboarding included
  • 24/7 emergency hotline
Book an architecture callExplore Enterprise
G2 High PerformerG2 Easiest to UseG2 Users Most Likely to Recommend Top 50 German Software CompaniesG2 Awards 2026 · based on verified customer reviews
Trust Center: certifications and compliance
ISO 27001
SOC 2 Type II
BSI C5
  • 24/7 SupportSecurity threats don’t wait for business hours, and neither do we. Our specialists are available around the clock to help you when needed.
  • GDPR-compliantLink11’s European location ensures your content remains compliant with strict GDPR regulations and EU data protection laws.
  • Fully managed serviceOur fully managed solution, maintained by security experts around the clock, ensures your protection is always up to date, 24/7, 365 days a year.
45Points of presence worldwide.
13Scrubbing centers in the Link11 network.
24/7Security operations center with our own analysts.
2005Founded in Germany.

Commitments you can verify. Evidence in the Trust Center.

Certifications and compliance

Triple SLAFor Network DDoS Protection: response time, availability and protected bandwidth, where contractually agreed.
Qualified by the BSILink11 is listed by Germany’s BSI as a qualified DDoS mitigation provider.
Developed in EuropeCertifications and policies are in the Trust Center.
24/7 customer serviceReal people, around the clock. Here for you whenever you need us. In both German and English.

Network Security. The flood hits our network, not yours.

Whole networks, prefixes and autonomous systems stay reachable, because attack traffic is stopped before it reaches your infrastructure.

  • Stops floods, exhaustion and multi-vector attacks
  • Learns normal behavior
  • Every mitigation explained

Explore Network Security

Network DDoS Protection interface
Airport departure boardsWhen an attack fills the airport’s uplink, check-in and departure boards stop.

Always-on filters traffic in the Link11 network, so the boards keep updating.

Protection only under attackIf always-on for every service is too expensive or not wanted.

On-demand monitors flow data and only reroutes during an attack, manually by your team or automatically by Link11.

Evidence for the auditKRITIS, NIS2 or DORA require you to prove that your defense is effective.

Attack report and event log document every intervention with source, time and reason.

Web Application Security. Attacks out, customers in.

Your shop and your APIs stay available, even when bots and application-layer attacks look exactly like real customers.

  • Less rule maintenance
  • Controlled roll-outs
  • Every block traceable

Explore Web Application Security

Web Application Firewall interface
Ticket app at rush hourCommuters search connections in the ticket app; a flood of fake searches takes it down.

Suspicious sequences are detected before the backend, and the timetable keeps loading.

Checkout and portalsDuring a campaign the attack comes when it costs the most — and capacity is tight anyway.

Mitigation scales with the load; allowed traffic keeps reaching the shop.

Login and accountsScripts try stolen passwords, then guess the login codes one by one. Every hit is a customer account in the wrong hands.

Rate limits and challenges stop the guessing; customers sign in as usual.

Application Performance. Fast, even at prime time.

Secure DNS keeps your domain resolvable, even under attack. Secure CDN delivers content faster and takes load off your origin.

  • Faster load times, better SEO
  • Less origin load
  • Globally distributed network

Explore Application Performance

Secure CDN interface
Only where you operateYour offer is meant for certain countries, but requests arrive from everywhere.

Geo blocking prevents access to your content in the CDN per country, or for whole regions. Geofencing keeps your content off nodes in the countries you exclude.

Election nightPolls close, the whole country reloads the results, and the page is a target too.

When enabled, the CDN keeps serving cached results, even if the origin stops responding.

Far from homeOn holiday, readers open the news from home, and travelers order from your shop abroad. Your origin is far away from both.

Content comes from the nearest edge node, so pages load quickly wherever they are.

Let’s talk

Your business stays online. We’ll show you how.

Talk to an expert

ContactBook a demoRequest a callbackEmergency callbackNeeds check

Tell us what you need to protect.

  • Your requirements, discussed with our team
  • A proposal for your setup

Call the SOC now, or leave a number and we’ll call you back.

Three questions, then we recommend the right plan.

Under attack right now? +49 (0) 69 58004926 99 Emergency hotline · 24/7
Which products should the demo cover? (choose one or more)
What do you need to protect? (optional)
Are you already a Link11 customer?
What is affected? (optional)

A specialist will get back to you. The form does not replace the call.

  1. Area
  2. Scope
  3. Result
What do you want to protect? (choose one or more)
How many domains do you want to protect?
1 domain
How much data do your sites deliver per month?
0.25 TB per month
How many requests reach your sites per month?
5 million requests per month

Also needed? (optional)