protect ddos

7 Best Free DDoS Protection Tools

All of the free DDoS protection options listed.

When it comes to website security, DDoS protection gets critical. An attack outage does not only cause financial damage but is super bad for your business reputation and customer trust too.

Ponemon Institute study also estimates that companies could lose $22,000 on average for every minute of DDoS downtime.

These are some of the reasons why most online businesses want the best free DDoS protection programs in place even with non-critical assets. But, where should one start?

When you are looking for solutions to protect the online business from such attacks, it’s important to look at what industry leaders use and why they use these tools.

Here are the top choices to secure with freemium or free trial plans to stop DDoS attacks.

1 Incapsula

Incapsula is the global leader in website/Layer 7/application layer protection. They offer a guarantee of stopping an attack in 10 seconds irrespective of its size or volume. They are helping thousands of businesses across the globe defend against bot activity and distributed denial of service.

Their solution provides a proxy for web requests to deal with the following threats:

  • TCP Fragment
  • Ping of Death
  • Smurf
  • Reflected ICMP & UDP
  • NXDomain
  • Mixed SYN + UDP or ICMP + UDP Flood
  • DNS Flood
  • UDP
  • Slowloris
  • Spoofing
  • ICMP
  • IGMP
  • HTTP Flood
  • Brute Force
  • Connection Flood

Pros: Global leader, cloud solution, quick response, free version

Cons: Paid version costly for startups

2 Cloudflare

CloudFlare’s anti-DDoS free services are quickly becoming the #1 choice for many businesses across the world. With the recent surge in bot attacks, many small businesses have opted for their free protection services and later upgraded to premium versions.

cloudflare ddos

Their DDoS protection tool is one of the best around when it comes to dealing with HTTP Flooding- and attack type which generates HTTP, GET, or POST requests from multiple sources. You might have noticed the protection screen above displayed on most of their customer websites.

If you are a startup or small business looking to start with a free protection tool, CloudFlare is a good option to look at.

Pros: free version options, popular, quick action

Cons: costly premium versions

3 SiteLock

StiteLock’s website bot protection service is similar to what CloudFlare has to offer. It promises automatic mitigation of most common bot attacks at both Layer 3 and 7. Since we are looking at application-layer attacks, let’s take a closer look at their capability.

  • Attacks targeting Apache, Windows or OpenBSD Vulnerabilities
  • Attacks Targeting DNS Servers
  • Brute Force
  • Connection Flood
  • CP FIN
  • DNS flood
  • HTTP Flood
  • ICMP
  • IGMP
  • Mixed SYN + UDP or ICMP +UDP Flood
  • Ping of Death
  • Slowloris
  • Spoofing
  • Smurf
  • TCP Fragment
  • Teardrop
  • UDP
  • Reflected ICMP and UDP
  • Zero-day DDoS Attacks

Pros: Easy to set up, bundled with a complete security plan

Cons: bad customer support

4 Akamai

With Akamai’s 200,000+ security devices in over 120 countries, there is no denying that they are serious about the business. Their Security Operations Center (SOC) staffs more than 150 people looking at terabytes of data to help companies get rid of bot attacks in real time.

If you opt for Akamai’s services, they have tones of resources (whitepapers, webinars) to ensure that customers optimize product usage. You might also like to know that in 2017 Akamai was positioned as a leader in Gartner Magic Quadrant for Web Application Firewalls.  For references on their anti-DDoS capability, you should check out the customer’s page to understand how popular Akamai is.

Pros: experienced team, leader as per Gartner, a huge repository

Cons: costly

5 StackPath

Though one of the lesser known player StackPath offers comprehensive DDoS solution to online companies. This web security platform, however, does not offer standalone protection for bot attacks.

Their integrated security platform, as a part of the web security plan, also protects against SYN floods and UDP floods. In short, you must take the web application firewall solution to stop bot attacks.

Pros: great for startups looking for complete site security

Cons: DDoS solution not standalone

6 NexusGuard

When you want just DDoS protection solution and do not even want to look at anything else, companies like NexusGuard offers great benefits. This product offers mitigation on different kinds of traffic abuses with deep packet inspection (DPI), high-speed border filtering, protocol verification, adaptive filtering, application-level filtering, flexible content filtering, progressive challenge-response (C/R) user authentication, intelligent HTTP malformed filtering, and rate limiting.

If you are a fast-paced business that does not want to spend time tweaking DDoS threat rules and want to leave everything on the protection tool, this one will serve you well. The product is popular with small businesses and startups in the North-American and Canadian region.

Pros: dedicated solution, portal view

Cons: lack of training or product resources

7 DosArrest

With over 10 years of experience in stopping distributed denial of service attacks, DoS Arrest offers security at every level. With an average response time of fewer than ten minutes,    it keeps you keep secure from all kinds of web-based attacks originating from bot activity to bring your application/website down.

Please note that DoS Arrest has 8 different sensors across the world feeding data to DOSarrest External Monitoring Service (DEMS) for real-time data and analytics on your web site’s security status.

Pros: experienced vendor, quick response, real-time reports

Cons: costly, difficult to use interface

Do you have any tools that you’d want us to feature? Send a message about it.


Ishan Mathur

From stopping hackers to getting the fastest CDN, I'm helping big and small companies choose what's best for them by building a community here.

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