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Best Web Application Firewall in 2024

What is Web Application Firewall?

A web application firewall (WAF) is a security tool that sits between your web application and the internet, acting as a shield against malicious traffic. It monitors and filters all HTTP/HTTPS traffic going to and from your web application, and blocks any suspicious or harmful requests. Read Buyer’s Guideimg

Best Web Application Firewall

(Showing 1 - 8 of 8 products)

Most PopularNewest FirstTop Rated Products
NGINX Plus

NGINX Plus

Brand: NGINX (part of F5)

4.1img

4.1 out of 5

(4 user reviews)

NGINX Plus is the only cloud-native solution, which combines the features for content caching, security controls, load balancing, Web Server, Reverse Prox... Read More About NGINX Plus img

Price On Request

Neustar DDoS Attack Protection

Neustar DDoS Attack Protection

Brand: Neustar

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Neustar DDoS Attack Protection is capable of stopping the most massive cyber-attacks and keeping your infrastructure protected. The software provides clou... Read More About Neustar DDoS Attack Protection img

Price On Request

Rapid7 Appspider

Rapid7 Appspider

Brand: rapid7

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Rapid7 Appspider provides a set of features for business users to increase productivity and perform core functions accurately. Depending on the size and re... Read More About Rapid7 Appspider img

Price On Request

NGINX Plus WAF

NGINX Plus WAF

Brand: NGINX (part of F5)

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NGINX Plus WAF is a futuristic app-security solution that is capable of performing within DevOps environments while users are delivering apps from code to... Read More About NGINX Plus WAF img

Price On Request

Radware AppWall

Radware AppWall

Brand: Radware

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Radware AppWall is a network security solution built for ISP providers and organizations that rely heavily on network-based working systems. The software... Read More About Radware AppWall img

Price On Request

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Codeigniter

Codeigniter

Brand: CODEIGNITER

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... Read More About Codeigniter img

Price On Request

Sucuri WAF

Sucuri WAF

Brand: Sucuri

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Sucuri Website Application Firewall (WAF) is a cloud-based WAF which stops website hacks and attacks. The firewall software detects any threats that your w... Read More About Sucuri WAF img

₹13,999

Laravel

Laravel

Brand: LARAVEL

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... Read More About Laravel img

Price On Request

Last Updated on : 25 Jan, 2024

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Best Web Application Firewall FAQ’s

Software questions,
answered

It protects your web applications by monitoring the potential threats and blocking malicious HTTP/HTTPS traffic. It prevents any unauthorized data leaving the application.

AWS and Cloudflare WAFs are the best web application firewalls.

It works as a defense layer and protects web apps from attacks such as XSS, SQL injection, cookie poisoning and others.

A few disadvantages of using the application firewall are reduced speed, non-compatibility with browser, and in few cloud-based one is reliability.

It is important to prevent any unauthorized data from leaving the app, and monitors and filters incoming traffic. An application firewall detects, filters, monitors and blocks malicious HTTP/HTTPS traffic hitting the website.

Articles for Web Application Firewall

Buyer's Guide for Top Web Application Firewall

Found our list of Web Application Firewall helpful? We’re here to help you make the right choice and automate your business processes. Let’s discover some of the essential factors that you must consider to make a smarter decision!

  • What is Web Application Firewall?
  • How Does Web Application Firewall Work?
  • What are the Features of Web Application Firewall?
  • What are the Benefits of Web Application Firewall?
  • What are the Types of Web Application Firewall?
  • What are the Examples of Web Application Firewalls?
  • 5 Top Web Application Firewalls
  • What are the Factors While Choosing the Best Web Application Firewall?

What is Web Application Firewall?

A Web Application Firewall (WAF) is a protective tool for web applications to monitor incoming traffic and protect them against online threats. It is the first layer of defense between an app and the internet traffic. It identifies and obstructs malicious HTTP/S traffic such as SQL injection, XSS, and DDoS attacks to any web application. It also prevents the outflow of unauthorized data from your web application.

Additionally, the web app firewall enables access controls and offers real-time monitoring and logging capabilities for analysis. When combined with secure coding practices, it effectively enhances the overall security of web applications.

How Does Web Application Firewall Work?

A Web Application Firewall works by interfering and analyzing incoming HTTP/HTTPS requests and outgoing responses between a web application and its users. Here's how it operates:

  • Traffic Inspection: It examines all incoming web application traffic, including request headers, parameters, and payload data.
  • Rule-Based Filtering: It compares incoming data against known threat patterns, effectively identifying malicious or suspicious traffic based on predefined security rules.
  • Threat Detection: It utilizes techniques such as signature-based detection and anomaly detection to detect potential threats such as SQL injection, cross-site scripting (XSS), and other common web application attacks.
  • Blocking and Filtering: When the firewall succeeds in detecting malicious traffic, it proactively blocks or filters such traffic before it reaches the web application, preventing potential harm.
  • Whitelisting and Blacklisting: Administrators can configure the firewall to allow trusted IP addresses and disallow known malicious entities.
  • Virtual Patching: In situations where the web application has known vulnerabilities, but the patching process is delayed, it can apply temporary virtual patches to reduce risks until the application is updated.
  • Logging and Monitoring: It maintains comprehensive logs of web traffic and security events, enabling administrators to analyse and respond effectively to potential threats.

What are the Features of Web Application Firewall?

  • Attack Signature Databases: Web Application Firewall heavily relies on databases containing attack signatures. It follows patterns that indicate malicious traffic, including server responses, and known malicious IP addresses. However, these databases were less effective against new or unknown attacks.
  • AI-Enhanced Traffic Pattern Analysis: AI algorithms enable behavioral analysis of traffic patterns, comparing them against different traffic types to detect anomalies that might indicate an attack. This allows the detection of attacks that do not match known malicious patterns.
  • Customization: Security rules can be pre-defined to application traffic, allowing organizations to customize Web Firewall behavior as per their requirement and avoid blocking legitimate traffic.
  • Application profiling: It evaluates the typical requests required for any application structure and allows data type accordingly. It could be URLs or values that need necessary permission from the web app firewall to enter.
  • Correlation engines: It analyze the incoming traffic and ensure if it should be blocked or not. It keeps track of past attacks and detects malicious attacks through a set of custom rules.
  • DDoS Protection Platforms: Cloud-based platforms, such as SaaS products and Amazon Web Services (AWS) can be integrated with WAF to protect against Distributed Denial of Service (DDoS) attacks. It can transfer detected DDoS traffic to this platform, which is capable of handling large volumes of attacks.
  • Content Delivery Networks (CDNs): Deployed at the network edge, a cloud-hosted application firewall can provide a CDN to cache the website, enhancing its load time. There are several globally distributed points of presence (PoPs) and CDNs are deployed here. When a user visits a particular website, he is served from the closest PoP. This increases the website load time for the user, lowers down the burden on servers and increases security.

What are the Benefits of Web Application Firewall?

It comes with the following benefits:

  • Web Application Security: These are built to protect web applications against a range of cyber threats, such as SQL injection, cross-site scripting (XSS), cross-site request forgery (CSRF), and other common attacks.
  • Vulnerability Management: These can apply virtual patches to known vulnerabilities in web applications, reducing the risk of exploitation while developers address the underlying issues.
  • Minimized Downtime: By proactively preventing successful attacks, these help minimize application downtime, ensuring uninterrupted service for legitimate users.
  • Compliance Assistance: Setting it up helps organizations in meeting industry and regulatory compliance requirements concerning web application security.
  • Bot Defense: It detects and blocks malicious bots, automated scanners, and web scrapers attempting to access or steal sensitive data.

What are the Types of Web Application Firewall?

There are three types of Web Application Firewall:

  • Hardware-based WAF: As the name suggests, it is deployed through a hardware appliance and installed within the local area network (LAN) close to the web and application servers. This type involves fast speed and high performance. This type is suitable for large organizations, fetching thousands of daily users on their platform.
  • Software-based Firewall: This is installed virtually on a virtual machine. All elements, however, are the same as are in the hardware-based application firewall. This is a more flexible option as the virtual machine can also be deployed in the cloud. This type is suitable for organizations with cloud-based web and application servers, such as hosting providers and data centers.
  • Cloud-based Firewall: This is the latest generation of web app firewall that is directly managed by a service provider in the form of SaaS (Software-as-a-Service). Its components are in the cloud and there is no use of any virtual machine for installation. Small and medium-sized businesses are its most probable clients.

What are the Examples of Web Application Firewalls?

  • AWS: Amazon Web Services is a cloud-based Web Application Firewall that protects web applications and APIs from common threats like SQL injection and XSS, integrating well with AWS services.
  • Azure: Microsoft Azure Web App Firewall safeguards web apps from malicious traffic with custom rules and predefined protection against known vulnerabilities.
  • Imperva: Imperva's standalone app firewall defends against threats and zero-day attacks, deployed on-premises or on the cloud.
  • Akamai: Akamai's cloud-based Web Application Firewall uses a global network to protect against online threats and DDoS attacks, integrating with their CDN services.
  • Cloudflare: Cloudflare's easy-to-set-up WAF offers protection against web app attacks and DDoS, leveraging their CDN and caching capabilities.

5 Top Web Application Firewalls

Products Best For Pricing
Sucuri WAF Website security and protection against DDoS attacks. Starting at INR 13999
NGINX Plus High-performance web applications and load balancing. Available on request
Codeigniter A PHP framework with built-in security features for web application development. Available on request
Laravel Security practices and modern web application development. Available on request
Radware AppWall Protecting web applications against various cyber threats. Available on request

What are the Factors While Choosing the Best Web Application Firewall?

When choosing the best Web Application Firewall for your needs, consider the following factors:

  • Security Features: Go for a web firewall with robust security features, safeguarding against common web vulnerabilities like SQL injection, XSS, and OWASP Top 10 threats.
  • Deployment and Management: Choose a firewall that offers easy deployment and management, especially cloud-based solutions for streamlined setup and automated operations.
  • Performance Impact: Evaluate the WAF's impact on web app performance, aiming for minimal latency to maintain a smooth user experience.
  • Threat Intelligence: Ensure the WAF receives regular updates with the latest threat intelligence to stay effective against emerging risks.
  • Reporting and Analytics: Prioritize WAFs with comprehensive reporting and analytics, enabling a better understanding of your app's security and identifying attack trends.
  • Integration and Compatibility: Verify seamless integration with your existing infrastructure, web servers, load balancers, CDN, and other relevant components.
  • Cost-effectiveness: Evaluate total ownership costs, including licensing, infrastructure, and maintenance, to find a WAF that aligns with your budget.

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