Mastering HTTP DDoS Attack Defence: Innovative Strategies for Web Protection

Jaspal Sharma
Technical Director – India & Middle East Radware

Understanding HTTP DDoS Attacks

An HTTP DDoS attack is a type of denial-of-service attack where the attacker aims to make a website or web service unavailable to its intended users by overwhelming the target with a flood of HTTP requests. These attacks exploit the stateful nature of the HTTP protocol, consuming server resources and bandwidth to the point where legitimate requests cannot be processed.

Unlike other DDoS attacks that rely on volumetric tactics to saturate the network layer, HTTP DDoS attacks are more insidious. They typically require fewer resources from the attacker, making them not only cost-effective but also harder to detect and mitigate. Attackers often use compromised web servers and botnets to launch such attacks, further complicating the identification of malicious traffic.

Understanding HTTP DDoS Attacks & Radware’s Mitigation Strategies

In the ever-evolving landscape of cyber threats, Distributed Denial of Service (DDoS) attacks remain one of the most pervasive and damaging types of cyberattacks. Among these, HTTP DDoS attacks specifically target the layer at which web applications operate, making them both sophisticated and challenging to mitigate. With over a decade of experience in the cybersecurity industry, Radware has established itself as a leader in providing cutting-edge solutions to protect against such threats. This article aims to educate the market on HTTP DDoS attacks and demonstrate how Radware’s innovative products offer robust protection and mitigation strategies.

The Threat Landscape

The threat landscape for HTTP DDoS attacks is constantly expanding, with attackers continually developing new techniques to evade detection. Some common methods include using HTTP GET or POST requests to consume server resources, leveraging malformed HTTP headers to confuse web applications, and employing slowloris attacks that open and maintain multiple connections to the server without closing them, eventually exhausting server resources.

These attacks can have devastating effects on businesses, including service disruption, loss of customer trust, and significant financial losses. The need for effective mitigation strategies has never been more critical.

Radware’s Mitigation Solutions

Radware’s approach to mitigating HTTP DDoS attacks is multifaceted, combining advanced detection techniques with proactive mitigation strategies. At the core of Radware’s solutions is the DefensePro product line, which includes real-time, behavioural-based detection capabilities that can accurately distinguish between legitimate traffic and DDoS attacks.

Detection and Mitigation

Radware’s DefensePro utilizes advanced algorithms and machine learning to analyze traffic patterns and identify anomalies that may indicate an HTTP DDoS attack. Once an attack is detected, DefensePro immediately initiates mitigation strategies tailored to the specific characteristics of the attack. This ensures that legitimate traffic is not impacted, maintaining service availability and performance.

Behavioural-Based Analysis

Unlike traditional DDoS mitigation solutions that rely on predefined thresholds and signatures, Radware’s solutions use behavioural-based analysis to dynamically adapt to changing attack patterns. This allows for the detection of sophisticated, multi-vector attacks that might otherwise go unnoticed.

Cloud DDoS Protection

In addition to on-premises solutions, Radware also offers cloud-based DDoS protection services. Radware’s Cloud DDoS Protection Service provides scalable, elastic DDoS mitigation capabilities, ideal for businesses that operate significant online services. This service leverages global scrubbing centres to absorb and mitigate attack traffic, redirecting only clean traffic to the customer’s infrastructure.

Integrated Application & Network Security

Radware’s solutions are designed to provide comprehensive protection across both application and network layers. This integrated approach ensures that businesses are protected against a wide range of cyber threats, from volumetric network attacks to sophisticated application-layer attacks.

Best Practices for HTTP DDoS Protection

While Radware’s products offer robust protection against HTTP DDoS attacks, it’s essential for businesses to adopt a proactive security posture. Some best practices include:

  1. Regularly Updating Security Systems: Ensure that all security systems are up to date with the latest signatures and detection algorithms.
  2. Implementing Access Control Lists (ACLs): Use ACLs to restrict access to resources, minimizing the potential impact of an attack.
  3. Deploying Rate Limiting: Implement rate limiting on your web servers to prevent them from being overwhelmed by excessive requests.
  4. Monitoring and Logging: Maintain comprehensive logs and monitor your infrastructure closely to detect potential attacks early.
  5. Creating an Incident Response Plan: Have a detailed incident response plan in place to quickly and effectively respond to detected attacks.


HTTP DDoS attacks represent a significant threat to businesses operating online. However, with Radware’s cutting-edge detection and mitigation solutions, organizations can protect themselves against these attacks, ensuring their services remain available and secure. By combining advanced technology with best practices in cybersecurity, Radware empowers businesses to stay one step ahead of cyber threats.

In the face of an ever-changing cyber threat landscape, Radware’s commitment to innovation and excellence in cybersecurity offers businesses the assurance they need to operate confidently in the digital world.


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