Does Cloudflare Prevent DDoS

Does Cloudflare Prevent DDoS?

6 mins

Cloudflare is a content delivery network (CDN) and security service. It’s designed to make websites faster and more secure. Cloudflare has been credited with helping to prevent DDoS attacks, but does it actually work?

Yes, Cloudflare provides enterprise-grade DDoS protection. It has built-in capabilities to identify and mitigate various types of DDoS attacks, including SYN flooding, DNS amplification, and HTTP floods.

Furthermore, Cloudflare’s Anycast network enables it to distribute incoming traffic across its global network of data centers, which helps further protect against DDoS attacks.

What Is DDoS Attack and How Does it Work?

DDoS attacks are not new, but they have become more prevalent in recent years as the internet has become more essential in our lives. 

The reason for this is that DDoS attacks are relatively easy to execute and can be very disruptive. They can be used to target anyone from large corporations to small businesses and even individuals.

There is no one typic target for a DDoS attack, but anyone who relies on the internet for their business or personal life is at risk.  There are a few ways to protect yourself from DDoS attacks.

  • One is to have a good firewall in place that can filter out malicious traffic. 
  • Another is to use a content delivery network (CDN) which spreads your traffic across multiple servers so that one server being overloaded will not take down your entire site.
  • Finally, you can also contact your ISP (Internet Service Provider) and ask them about their DDoS protection services. 

While there is no guaranteed way to prevent DDoS attacks, being aware of the threat and taking steps to protect yourself can go a long way in keeping your site or service up and running in the event of an attack.

What Are the Common Uses of DDoS?

DDoS or Distributed Denial of Service, these attacks are a type of cyber attack in which the attacker seeks to render a computer or network resource unavailable to its intended users.

One of the most common methods of launching a DDoS attack is to flood the target with requests for information, essentially overwhelming it and preventing it from being able to respond to legitimate requests.

DDoS attacks can be used for a variety of purposes, such as political activism, vandalism, or even extortion.

In some cases, attackers may simply want to cause disruptions for their own amusement. Whatever the motives behind a DDoS attack may be, the result is always the same: the victim is left unable to access the resources they need.

Does Cloudflare Prevent DDoS?

In the simplest terms, Cloudflare’s Anycast network protects against DDoS attacks by rerouting traffic away from your origin server and onto Cloudflare’s global network of data centers. Here’s how it works:


When you sign up for Cloudflare, you change your DNS records to point to Cloudflare’s servers instead of your origin server. When someone tries to access your website, their browser will send a DNS request to Cloudflare’s servers. Cloudflare will then route that request to the nearest data center. From there, the request will be passed along to your origin server.

Cloudflare also has what’s called a “scrubbing center” which is specifically designed to filter out malicious traffic before it ever reaches your origin server. The scrubbing center is constantly monitoring for suspicious activity and can automatically block most DDoS attacks.

In the event that an attack does make it through the scrubbing center, Cloudflare’s Anycast network is designed to spread the traffic across multiple data centers, so that no single data center is overwhelmed by the attack. This ensures that your website remains accessible even during a large-scale DDoS attack.

How To Use Cloudflare To Prevent DDoS?

Cloudflare is a cloud-based web security service that provides DDoS protection for its customers. It does this by filtering the traffic that is allowed to reach the target’s servers, and it also has a network of servers around the world that can absorb and deflect DDoS attacks.

This step-by-step guide will show you how to use Cloudflare to help prevent DDoS attacks on your business.

Step-1: Sign up for a Cloudflare account

You can sign up for a free account or choose an Enterprise plan depending on the size and needs of your business.

Step-2: Add your website to Cloudflare

Once you have signed up for an account, you will need to add your website to Cloudflare. This can be done by entering your domain name into the Dashboard or via the DNS tab under the Crypto menu.

Step-3: Enable DDoS Protection

Once you have added your website to Cloudflare, you will need to enable DDoS Protection for your site. This can be done by going to the DDoS Protection tab under the Firewall menu and then selecting the Enable DDoS Protection option.

Step-4: Monitor Your Traffic

Once DDoS Protection is enabled, Cloudflare will start monitoring your traffic for suspicious activity. You can view this activity in the Traffic dashboard under the Analytics menu.

Step-5: Respond To Attacks

If Cloudflare detects a DDoS attack on your website, it will notify you so that you can take appropriate action. This might include redirecting traffic away from your site or contacting law enforcement if necessary.

By following these steps, you can use Cloudflare to help prevent DDoS attacks on your business website.

Pros And Cons of using Cloudflare for preventing DDoS

Cloudflare’s services sit between a website’s visitor and the Cloudflare user’s hosting provider, acting as a reverse proxy for web traffic. Cloudflare also offers security measures such as filtering out malicious web traffic and providing an additional layer of security to their customers’ websites.


Now, we will discuss the pros and cons of using Cloudflare for preventing DDoS attacks. 


  • The first pro of using Cloudflare is that it can help to secure your website from DDoS attacks. This is because Cloudflare can act as a reverse proxy for web traffic, which means that it can route web traffic away from your website if it detects that the traffic is malicious.
  • Additionally, Cloudflare also offers other security measures such as filtering out malicious web traffic and providing an additional layer of security to their customers’ websites. This can help to protect your website from DDoS attacks, as well as other types of cyberattacks. 
  • The second pro of using Cloudflare is that it can improve your website’s performance. This is because Cloudflare’s content delivery network (CDN) caches your website’s content on its servers around the world.
    This means that when a visitor tries to access your website, they will be able to load your website faster because they will be retrieving the content from a nearby server instead of from your website’s server.
  • Additionally, Cloudflare can also compress your website’s files, which can further improve your website’s performance. 
  • The third pro of using Cloudflare is that it can save you money on hosting costs. This is because when you use Cloudflare, you are able to offload some of the bandwidth usages from your website to their servers around the world.

This means that you will not have to pay for as much bandwidth for your website, which can save you money on your hosting costs. 


  • The first con of using Cloudflare is that it can be difficult to set up. This is because, in order to use Cloudflare, you need to add some code to your website’s DNS records and make some changes to your website’s code.
  • Additionally, you need to sign up for a Cloudflare account and choose a plan that suits your needs. If you are not familiar with these concepts, then it can be difficult to set up Cloudflare on your own without assistance. 
  • The second con of using Cloudflare is that it can be costly if you need more features or bandwidth than what is offered in the free plan. While the free plan offers some features and bandwidth.
    If you need more than what is offered then you will need to sign up for one of their paid plans, which can become expensive if you need a lot of features or bandwidth. 
  • The third con of using Cloudflare is that they may sell access to customer data. While they state in their privacy policy that they do not sell customer data without consent, they have been known to give access to customer data to law enforcement without a warrant and have been criticized for their compliance with U.S surveillance requests.

If privacy is important to you, then this may be something you want to take into consideration before signing up for a Cloudflare account. 

All in all, there are both pros and cons when deciding whether or not to use vote-by-mail systems during elections. However, each situation is unique so we recommend discussing this topic with an election official in order to weigh all options prior to making any decisions.

Last Words

As you can see, Cloudflare is a great way to prevent DDoS attacks. It’s easy to set up and use, and it can be a huge help in keeping your website safe from attack.

However, there are some drawbacks to using Cloudflare for this purpose, so it’s important to weigh the pros and cons before making a decision.


Michael Fied

founder of and SpamBurner

Michael Fied is the founder and CEO of and SpamBurner. In addition, he’s an internationally top-rated and award-winning website advisor and website architect with a global team of 55. You can find Michael on LinkedIn or contact him directly here.

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