Top 10 Website Application Firewalls

A Web Application Firewall, or WAF, acts like a gatekeeper for websites, inspecting incoming web traffic and blocking harmful activities. It protects against common threats like SQL injections and cross-site scripting.

Cloudflare further explains this properly in a guide by saying, “A WAF operates through a set of rules often called policies. These policies aim to protect against vulnerabilities in the application by filtering out malicious traffic.”


Below are great WAF tools and platforms you can try out to stay protected:

1. Cloudflare WAF





Cloudflare’s Web Application Firewall (WAF) stands out for its instant protection, deploying new rules within seconds, faster than the industry average. Renowned for its simple setup and user-friendly management, it requires no hardware deployment or lengthy training sessions.

Acknowledged as a “Customers’ Choice” by Gartner’s Peer Insights in 2021, Cloudflare WAF offers speedy and precise security solutions against a wide array of threats. Their global network ensures swift protection, with a service aimed at modern application security challenges.


2. Radware Cloud WAF Service



Radware provides adaptive protection for web applications and APIs, irrespective of hosting environments. This service is designed for automatic adaptation to evolving threats and offers flexibility with deployment options, including bot management and built-in DDoS protection.

Rated highly on Gartner PeerInsights, Radware’s WAF combines positive and negative security models for all-encompassing web application coverage. Its unique architecture allows for reduced latency and ensures privacy, maintaining user trust and regulatory compliance.


3. Sucuri WAF



Sucuri’s Website Application Firewall delivers robust protection against hacks and attacks, enhancing site availability and speed. It features 24/7 security monitoring, offering protection against future breaches with a 30-day money-back guarantee.

Activation is straightforward, with options to safeguard data in transit and customise caching for optimised performance. Designed for compatibility with all platforms, Sucuri aims at providing reliable security solutions for businesses, ensuring continuous protection against a wide range of online threats while maintaining website performance.


4. Prisma® Cloud’s Web Application and API Security



Prisma Cloud offers the industry’s first cloud-native application protection platform (CNAPP) for securing web applications and APIs.

It supports OWASP Top 10 and API protection, along with vulnerability management and runtime defense, ensuring comprehensive security for microservices-based web applications and APIs in cloud and on-premises environments.

Automatic visibility, inline and out-of-band deployment options, and full lifecycle protection scale to meet modern security demands.


5. BitNinja



BitNinja provides proactive server protection through a multi-layered security tool easily managed from a centralized console. Their Web Application Firewall module, part of their server security platform, offers advanced filtering, low false positives, and is continuously updated against emerging security threats.

BitNinja’s solution is designed to protect against cyberattacks effectively, filtering web requests and auto-rejecting suspicious activities for enhanced server safety.



6. Azure Web Application Firewall



This cloud-native service from Microsoft Azure offers comprehensive protection against common web-hacking techniques like SQL injection and cross-site scripting.

Easy to deploy, Azure Web Application Firewall ensures complete visibility into your environment and blocks malicious attacks. It provides custom and managed rule sets to prevent attacks at the edge, supporting full REST API for automation, enabling businesses to meet their security requirements efficiently.


7. Bitdefender Internet Security



This suite provides essential online protection for Windows PCs, combining threat detection, privacy firewalls, and VPN services. Bitdefender offers unbeatable threat detection to keep all internet threats at bay while maintaining light resource usage on your system.

The package includes webcam and microphone protection, ensuring no eavesdropping, and a secure VPN for private online activities. Available for three devices, the subscription also comes with services recommended by industry experts like PCMag and AV-Comparatives.


8. Pressable Web Application Firewall (WAF)





Pressable offers a layer 7 web application firewall as part of their hosting service, providing essential protection against common web threats such as XSS, SQL injection, and more.

This solution is designed to secure your WordPress website by monitoring, filtering, and blocking harmful traffic while letting legitimate traffic pass through smoothly.

Pressable’s WAF ensures your data remains safe from application-level attacks and data breaches, making it an ideal solution for WordPress-hosted sites seeking enhanced security without complexity.


9. FortiWeb Web Application Firewall



FortiWeb offers a comprehensive solution designed to protect web applications and APIs from known and unknown vulnerabilities. Their WAF defends against OWASP Top-10 threats and DDoS attacks while using advanced machine learning features to improve security and reduce administrative tasks.

FortiWeb is suitable for businesses looking for robust web application security with capabilities such as API discovery and protection, bot mitigation, and advanced threat analytics. It’s a part of Fortinet’s FortiFlex programme, which provides flexible right-sizing of services and spending.


10. SiteLock Web Application Firewall (WAF)



SiteLock’s Web Application Firewall (WAF) is a proactive solution designed to protect websites and web applications from cyber threats and harmful traffic. It distinguishes between good and bad visitors, ensuring only safe traffic accesses your site.

This firewall service offers advanced protection against the top ten web app security risks, effectively blocking cybercriminals and harmful bots. With features like backdoor file identification, bot behavioural analysis, and quick setup, SiteLock provides a user-friendly security solution.

It also enhances website performance through advanced content caching and protects against common attacks such as SQL injection and XSS with high accuracy, ensuring a safe browsing environment for your visitors.