How to prevent DDoS web attacks

DDoS attacks can bring down the site immediately because when you are targeted by hackers, they will do everything to overload your web server. The site is unresponsive, inaccessible, and completely offline.

If the website is hacked, your business will be delayed and sales will drop sharply due to losing customers. Restoring a website after a DDoS attack can cost businesses countless dollars of money. For large businesses, website recovery costs can skyrocket to millions of dollars. Therefore, preparing a perfect plan to prevent DDoS website attacks is extremely necessary for every business.

There are many ways to protect your site and prevent DDoS attacks. VNETWORK will share with you how to prevent common website DDoS attacks. We will analyze how DDoS attacks work and show you how to prevent them.

In DDoS attacks, hackers often send a large amount of traffic to the site to overwhelm your server. This causes your site to stop working. To protect the website, you need to build a web firewall system strong enough to prevent malicious traffic to the website. Install WAF VNIS, a smart firewall system to help secure your website. It will help reduce the risk of DDoS attacks by automatically monitoring traffic to your site.

What is a DDoS attack?

The DDoS attack is known as a distributed denial-of-service attack, it is a non-intrusive attack, which means that hackers do not need to access your website to launch the attack. They perform remote attacks without hacking into your site. The hacker will overload the webserver and make that website offline.

Hackers attack the DDoS website for what purpose?

Reason 1: Often, hackers try to crack the admin password to gain administrative rights on your website. Therefore, they will continually send numerous requests to try different passwords and usernames on the website, these constant requests can lead to an overload of your website.

Reason 2: Larger DDoS attacks are often done to bring down big brands and disrupt their business. Hackers also use large DDoS attacks for ransom.

How does DDoS attack work?

To understand how a DDoS attack works, we first need to understand how your site works when a visitor wants to see a page.

Step 1: When a visitor comes to the site via a web browser, this browser will send a request to your web server.

Step 2: The server processes this request and retrieves the necessary data, then sends it back to the browser.

Step 3: The browser then uses this data to display the content of your website to visitors.

Each web server only has a limited amount of resources to host your website. This limit is usually provided by the web hosting service provider and depends on the hosting package you sign up for.

If your web server resource is not large enough, it can only handle a small number of certain browser requests at a time. Too many requests at the same time can burden the server and deplete its resources.

This will make your site slow and unresponsive to users.

Now that you understand how the web browser and the root server communicate. How do we explain how a DDoS attack works?

Hackers will plan DDoS attacks in advance. They often have to prepare a strong army to attack your site.

Step 1: The hacker will create a network with countless IPs from different smart devices to perform DDoS attacks. Typically, a hacker will infiltrate a smartphone or mobile phone and then infect the malware with it.

This malware will allow hackers to remotely control the device, send requests to access the website with the IP of these infected devices to the target site. This network is often called a botnet.

Hackers can also rent a botnet network for sale on underground websites.

Step 2: The hacker will send thousands of fake requests from botnet to your web server.

Step 3: Hackers will clog your server with as many requests as possible to exhaust website resources, cause it to crash, and offline.

In the event that hackers can't clog your bandwidth and crash your site, then at least it might have some effect on your site's speed and performance.

DDoS attacks are increasing in number and become a serious threat to many e-commerce websites. Protect your website with the most trusted website security firewall system at VNIS WAF.

When your site is under DDoS attack, you need to act quickly. The longer your website goes down, the more customers and revenue you lose.

How to detect a DDoS attack on your site?

You can not know in advance whenever your website is about to show a DDoS attack, everything happens will be extremely unexpected.

You also can not monitor the operation of the website continuously 24 hours from day today. Therefore, it is difficult to know if your website performance is good for users unless you receive feedback from your customers.

You may think that something is wrong with your web server system. By the time you realized it was a real DDoS attack, the customer had left, resulting in a drop in sales.

The best way to reduce the number of DDoS attacks for websites you need to master:

Step 1: Check your website traffic. You can check web traffic through Google Analytics.

Step 2: Check website hosting resources. The sole purpose of a DDoS attack is to deplete your website's resources.

Most web hosting providers can display your web traffic statistics on the dashboard.

Usually, your website has earned easy exhaustion. It will take a lot of traffic to your site to reach its limit.

If you find that your website hosting usage has reached the limit, then the possibility of a DDoS attack is very likely. You need to use a smart website security system against DDoS of VNIS that is trusted by many businesses.

How to prevent a DDoS attack?

There are many website security firewall systems that businesses use. However, not all website firewalls have the ability to prevent DDoS performance as expected.

To protect your site from a DDoS attack, you need to:

- Firewall settings

- Control the website activity log

- Implement geographic keys, not receiving traffic from the traffic coming from some countries

- Install malware security scanner


DDoS attacks are not only a nuisance but also a serious cybersecurity threat to many businesses today. This proves that building a preventive measure against website DDoS attacks is extremely necessary. You need to verify the security of the security firewall services, as well as the DDoS protection system that many vendors often offer.

>> Register to try VNIS anti-DDoS website system





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