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Last updated: 2026-03-16

What is DDoS Protection?

Definition

DDoS (Distributed Denial of Service) protection defends your website against attacks that flood your server with fake traffic, aiming to overwhelm it and take it offline. Good DDoS mitigation filters malicious traffic while allowing legitimate visitors through, keeping your site accessible during attacks.

Why It Matters

  • DDoS attacks can take your website offline for hours or days
  • Downtime directly impacts revenue, reputation, and SEO rankings
  • Attacks are increasing in frequency and sophistication
  • Even small websites can be targeted
  • Recovery without protection can be slow and costly

How It Works

DDoS attacks use thousands of compromised devices (a "botnet") to send massive amounts of traffic to your server simultaneously. Protection works by sitting between your server and the internet, analysing incoming traffic in real-time. Legitimate requests pass through while malicious traffic is filtered out. Methods include rate limiting, IP reputation scoring, challenge pages (CAPTCHAs), and traffic scrubbing centres that absorb attack volume.

Pros & Cons

Advantages

  • Keeps your website online during attacks
  • Protects revenue and reputation
  • Often included free with quality hosts
  • Modern solutions are largely automated
  • CDN-based protection adds performance benefits

Disadvantages

  • Advanced protection can be expensive
  • May occasionally block legitimate traffic
  • No solution is 100% effective against all attacks
  • Can add slight latency during mitigation
  • Some attacks target application layer, which is harder to filter

Common Misconceptions

  • !Only large websites get attacked (Small sites are frequently targeted)
  • !A firewall alone stops DDoS (You need dedicated DDoS mitigation)
  • !DDoS protection is expensive (Many hosts include basic protection free)
  • !All DDoS protection is the same (Levels vary dramatically between providers)

Do You Need DDoS Protection? Checklist

Consider ddos protection if any of these apply to you:

  • Your host includes DDoS protection
  • You understand what level of protection is provided
  • Cloudflare or similar CDN is configured for additional protection
  • You have a plan for responding to attacks
  • Contact details for your host's security team are accessible
  • Server resources can handle traffic spikes

Recommended Hosts for DDoS Protection

Kinsta

Enterprise-grade DDoS protection via Google Cloud and Cloudflare

Read Review

SiteGround

AI-powered anti-bot system with proactive monitoring

Read Review
View All Provider Reviews

Frequently Asked Questions

What is a DDoS attack?
A Distributed Denial of Service attack uses many compromised computers to flood your server with traffic, overwhelming its resources so legitimate visitors can't access your site. Attacks can last minutes, hours, or even days.
How do I know if I'm being DDoSed?
Signs include: sudden extreme slowdown, complete inaccessibility, unusual traffic spikes in analytics, server resource exhaustion, and alerts from your host. Monitoring tools like UptimeRobot can alert you immediately.
Does Cloudflare protect against DDoS?
Yes, Cloudflare offers DDoS protection even on its free plan. It absorbs attack traffic across its global network. For larger attacks, their paid plans offer more advanced mitigation and faster response times.
Can DDoS protection slow down my website?
Modern DDoS protection adds minimal latency (usually 1-5ms). CDN-based solutions like Cloudflare often improve performance since they also cache content. During active mitigation, there may be brief delays for challenge pages.
What is the difference between DoS and DDoS?
A DoS attack comes from a single source—easier to block by IP. A DDoS attack comes from thousands of distributed sources simultaneously, making it much harder to filter because you can't simply block one IP.
How much does DDoS protection cost?
Basic protection is often included free with hosting (SiteGround, Kinsta, Bluehost). Cloudflare offers free basic protection. Enterprise-level protection (Cloudflare Pro/Business, AWS Shield Advanced) costs £20-£3,000+/month depending on needs.
What should I do during a DDoS attack?
Contact your host's support immediately. Enable Cloudflare's "Under Attack" mode if available. Don't make server changes in panic. Document the attack for potential law enforcement. Review logs afterward to improve defences.

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