Best Web Application Firewalls (WAF) with a Free Trial of 2025

A10 Defend Threat Control is a SaaS component within the A10 suite. It offers a DDoS attack map in real-time and a proactive, detailed list DDoS weapons. A10 Defend Threat control is unlike other tools that are available today, which provide convenience but at the expense of false positives or false negatives. It provides insights into attackers and victims, analytics and vectors, trends and other characteristics. This helps organizations establish a stronger security posture by providing actionable insights that block malicious IPs who can launch DDoS attacks.

CacheGuard product line is based on a core product called CacheGuard-OS. Once installed on a bare metal or virtual machine, CacheGuard-OS transforms that machine into a powerful network appliance . The resulted appliance can then be implemented as different types of Gateways to Secure & Optimize your network. See below a brief description of all CacheGuard appliances. - Web Gateway: gain control over the Web traffic in your organization & filter unwanted Web traffic in your organization. - UTM (Unified Threat Management) : secure your networks against all kind of threats coming from the internet with a Firewall, an Antivirus at the Gateway, a VPN server and a Filtering proxy. - WAF (Web Application Firewall): block malicious requests on your critical Web applications and protect your business. The WAF integrates OWASP rules with the possibility to design your own custom rules. In addition, an IP reputation based filtering allows you to block IPs listed in real time blacklists. - WAN Optimizer : prioritize your critical network traffic, save your precious bandwidth and get High Availability for your internet access through multiple ISP.

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SKUDONET provides IT leaders with a cost effective platform that focuses on simplicity and flexibility. It ensures high performance of IT services and security. Effortlessly enhance the security and continuity of your applications with an open-source ADC that enables you to reduce costs and achieve maximum flexibility in your IT infrastructure.

FortiWeb WAF protects web applications and APIs from the OWASP Top 10, zero-day threats, and other application-layer attacks. It also includes robust features such as API discovery and protection, bot mitigation, threat analytics, and advanced reporting.

AppTrana, a fully managed Web app firewall, includes Web application scanning to identify application-layer vulnerabilities, instant and managed Risk-based Protection with its WAF and Managed DDOS, and Bot Mitigation service. Web site acceleration can also be provided with a bundled CDN, or can integrate with an existing CDN. All this is backed by a 24x7 managed security expert service that provides policy updates and custom rules with zero false positive guarantee. Only vendor to be named Customers’ Choice for WAAP in all the 7 segments of the Gartner VoC 2022 Report.

Haltdos ensures the 100% high availability of your website/web services by providing intelligent Web Application Firewall and application DDoS mitigation, Bot Protection, SSL offloading, Load Balancing solution over the public and private cloud that monitors, detects, and automatically mitigates a wide range of cyber-attacks including OWASP top 10 and Zero-day attacks, without requiring any human intervention.

Achieve extensive security for both on-premises and multi-cloud environments with the integrated firewall designed for cloud operations. The seamless, cloud-based Advanced Threat Protection system identifies and prevents sophisticated threats, such as zero-day vulnerabilities and ransomware assaults. With the support of a worldwide threat intelligence network that gathers data from millions of sources, you can quickly shield yourself from the latest dangers. Today's cyber threats, including ransomware, advanced persistent threats, and targeted attacks, necessitate increasingly advanced defense strategies that effectively balance precise threat detection with swift reaction capabilities. The Barracuda CloudGen Firewall provides an all-encompassing suite of next-generation firewall features to guarantee immediate network defense against a vast array of risks, weaknesses, and exploits, encompassing SQL injections, cross-site scripting, denial of service intrusions, trojans, malware, worms, spyware, and much more. By leveraging these advanced technologies, organizations can significantly enhance their resilience against evolving cyber threats and ensure the integrity of their data.

Protect websites from plugin vulnerabilities. WebARX is more than a security plugin. Our lightweight web application firewall blocks malicious traffic. WebARX firewall engine allows you to create your own firewall rules. Monitor your websites for security vulnerabilities and issues. WebARX is constantly updated and helps you to adapt the most recent security practices. You can generate weekly security reports and be alerted if anything is urgent.

The Advanced Web Application Firewall (WAF) safeguards your applications using behavioral analytics, proactive defense against bots, and encryption for sensitive data at the application layer. To understand how the Advanced WAF can enhance your security and reduce costs, utilize the ROI Estimator provided by F5 and Forrester. The F5 BIG-IP Advanced WAF is equipped with a robust array of security options designed to shield your web applications from various threats. While many WAFs deliver only a fundamental level of protection at the upper layers of the OSI model, the F5 Advanced WAF goes beyond that by incorporating advanced security capabilities such as the Anti Bot Mobile SDK, Credential Stuffing threat feeds, Proactive Bot Defense, and Datasafe, among others. It is essential to defend your applications, APIs, and data from common threats, including zero-day exploits, application-layer DoS attacks, coordinated threat campaigns, application takeovers, and malicious bots, ensuring a comprehensive security strategy. By investing in such advanced protections, you can significantly bolster your security measures and better protect your digital assets against evolving threats.

Enhance the security of web applications against various attacks and vulnerabilities by employing robust security measures and a consistent policy framework through our SaaS-based Web Application Firewall (WAF), which is designed for rapid deployment and effortless scalability in any environment. Streamline application security by integrating protective features directly into the development workflow, supported by essential security capabilities, centralized management, and comprehensive monitoring. The F5 Distributed Cloud WAF simplifies the challenges of maintaining secure applications across multiple cloud platforms, on-premises infrastructures, and edge environments. By providing the programmability essential for DevOps alongside the oversight required by SecOps, it facilitates quicker and safer application delivery and release processes. Additionally, users can enhance their understanding of security events, including WAF signature activations, denial-of-service incidents, ongoing automated threats, and all interactions with clients, while also gaining insight into application performance, complete with user-friendly drill-down options. This holistic approach ensures that security is not just an afterthought but an integral part of the development lifecycle.

Streamline the process of application delivery by utilizing software-defined load balancers, web application firewalls, and container ingress services that can be deployed across any application in various data centers and cloud environments. Enhance management efficiency through unified policies and consistent operations across on-premises data centers as well as hybrid and public cloud platforms, which include VMware Cloud (such as VMC on AWS, OCVS, AVS, and GCVE), AWS, Azure, Google Cloud, and Oracle Cloud. Empower infrastructure teams by alleviating them from manual tasks and provide DevOps teams with self-service capabilities. The automation toolkits for application delivery encompass a variety of resources, including Python SDK, RESTful APIs, and integrations with Ansible and Terraform. Additionally, achieve unparalleled insights into network performance, user experience, and security through real-time application performance monitoring, closed-loop analytics, and advanced machine learning techniques that continuously enhance system efficiency. This holistic approach not only improves performance but also fosters a culture of agility and responsiveness within the organization.

Our engineers are specialists at working in sectors where zero downtime is critical. Since 2003, we’ve been building a reputation for delivering ultra-reliable, easy to deploy and effortlessly scalable applications that are trusted by solution partners, system integrators and end-users alike. Our focus on forming long-lasting partnerships with industry-leading solution providers in healthcare, storage and print, requires an in-depth understanding of both our partners and their clients’ technical and business practices. The result: unprecedented levels of uptime.

Meet the Industry’s Context-Aware API Security Platform Traceable identifies all of your APIs, and evaluates your API risk posture, stops API attacks that lead to incidents such as data exfiltration, and provides analytics for threat hunting and forensic research. With our solution, you can confidently discover, manage and secure all of your APIs, quickly deploy, and easily scale to meet the ongoing needs of your organization.

SafeLine is one of the most popular WAF solutions globally, serving thousands of paid users and hundreds of thousands of active users daily. Utilizing a cutting-edge machine learning engine, it delivers nearly flawless detection rates and minimal false positives by deeply analyzing HTTP traffic semantics. The platform provides comprehensive bot mitigation features such as CAPTCHA challenges and adaptive protections against malicious crawlers. It also defends against large-scale HTTP Flood DDoS attacks by intelligently managing traffic flows and enforcing access controls. SafeLine’s unified identity management supports seamless integration across various cloud and on-premises environments. With an easy-to-use, wizard-driven interface and modular design, organizations can deploy and maintain enterprise-grade protection effortlessly. Pricing transparency ensures users understand exactly what they pay for, with options suited for personal use up to large-scale deployments. SafeLine’s open-source roots foster community-driven improvements, continuously enhancing its capabilities.

We offer the most user-friendly technology without sacrificing performance or features. We back it up with exceptional support and care delivered under a fair, cost-effective pricing model Our technology is used by small startups with big ideas, small budgets, and global enterprises. We love them all! Easy to use Load balancing, WAF, GSLB and SSO/Pre-Authentication. It is also the only true ADP Application Delivery Platform that allows for the enhancement of functionality and longevity using the app store or apps you create in-house.

Our cloud SWAP has been vetted as one of the best solutions to threats such as cross site scripting (XSS), SQL injections, and Distributed Denial of Service. Cloudbric's logic-based SWAP, which includes pattern matching, semantic, heuristic analysis, and core rulesets, is fully automated and simple to use. This means that there is no need to update security policies or sign signatures often. Private WAF deployments can also be customized with customization options. Our service ensures your website. Your website will remain online and be protected from distributed denial-of-service attacks (DDoS). Cloudbric actively blocks layers 3, 4 and 7 DDoS attacks that can scale up to 20Tbps*

Setting up conventional web application firewalls can require days of intensive work. However, Barracuda WAF-as-a-Service, a comprehensive and cloud-based application security solution, transforms this experience. You can deploy it quickly, adjust its settings, and have it fully operational—safeguarding all your applications from various threats—in a matter of minutes. This efficiency not only saves time but also ensures robust protection for your assets.

Safeguard your applications against prevalent web threats such as SQL injection and cross-site scripting. Utilize custom rules and groups to monitor your web applications, catering to your specific needs while minimizing false positives. Implement application-level load balancing and routing to create a scalable and highly available web front end on Azure. The autoscaling feature enhances flexibility by automatically adjusting Application Gateway instances according to the traffic load of your web application. Application Gateway seamlessly integrates with a variety of Azure services, ensuring a cohesive experience. Azure Traffic Manager enables redirection across multiple regions, provides automatic failover, and allows for maintenance without downtime. In your back-end pools, you can deploy Azure Virtual Machines, virtual machine scale sets, or take advantage of the Web Apps feature offered by Azure App Service. Centralized monitoring and alerting are provided by Azure Monitor and Azure Security Center, complemented by an application health dashboard for visibility. Additionally, Key Vault facilitates the centralized management and automatic renewal of SSL certificates, enhancing security. This comprehensive approach helps maintain the integrity and performance of your web applications effectively.

The Modshield SB Web Application Firewall (WAF), which utilizes Modsecurity and the OWASP Core Ruleset, is specifically designed to address all your application security requirements. It offers a comprehensive suite of security features ensuring complete protection for your applications and hosting environments. With the support of the OWASP Core Ruleset, Modshield SB delivers exceptional defense against the top ten OWASP threat vectors, including automated protections and safeguards against credential stuffing attacks. Choosing the Modshield SB Web Application Firewall means you can reliably ensure the confidentiality, integrity, and availability of your business applications for your users. Establishing a robust first line of defense for your applications has never been easier or more effective. Thanks to the integrated OWASP Core Ruleset, all your applications are automatically shielded from the most critical OWASP threats. Furthermore, there's no need for a separate Load Balancer, as you can utilize the built-in load balancing capabilities that Modshield SB provides, streamlining your infrastructure while enhancing security.

BaishanCloud delivers a dependable and streamlined CDN service, showcasing its regional knowledge particularly in areas such as China, Southeast Asia, and the Middle East. With over 1000 Points of Presence (PoPs) across the globe, it enables users to connect effectively, all while ensuring robust anti-DDoS and WAF protection alongside private network options. This level of reliability has earned BaishanCloud the trust of leading short media platforms that boast over 10 million users, thanks to its exceptional availability, ability to handle high concurrency, and low-latency content delivery solutions. By leveraging edge computing alongside extensive experience in the media sector, BaishanCloud effectively reduces security risks across platforms, assuring that major events run smoothly and video deliveries are uninterrupted. The company also provides customizable solutions and specialized features that cater to the unique requirements of its customers. To experience the service, potential users can opt for BaishanCloud’s free trial or design a personalized plan starting at just $0.065 per GB for the first 4TB of global traffic, making it a cost-effective choice for businesses of all sizes. This flexibility and commitment to customer satisfaction sets BaishanCloud apart in the competitive CDN landscape.

StormWall is a global leader in cybersecurity, specializing in protecting websites, networks, and IT infrastructures of any scale from modern DDoS threats. With over 12 years of expertise, we safeguard 1,000+ active clients across 70 countries, successfully completing more than 8,000 projects. Our robust global filtering network includes 8 scrubbing centers with a combined capacity exceeding 5 Tbps, ensuring powerful mitigation against all known DDoS attack vectors from L3 to L7. The Enterprise plan also features an Antibot solution to shield critical web applications from bot-driven threats. StormWall leverages cutting-edge AI-powered threat detection, using advanced anomaly analysis to swiftly identify and neutralize even the most complex multi-vector attacks. Our continuously evolving cloud-based platform keeps businesses ahead of emerging threats with best-in-class protection. With StormWall, clients only pay for legitimate traffic, eliminating unnecessary costs from attacks. Our expert support team is available 24/7, guaranteeing response times of 15 minutes or less for rapid issue resolution.

The Azure Web Application Firewall is a cloud-based solution designed to safeguard web applications against prevalent hacking methods, including SQL injection and cross-site scripting vulnerabilities. You can set up this service in minutes, enabling you to gain full visibility into your environment while effectively blocking malicious attacks. With the latest managed and preconfigured rule sets, you can protect your web applications quickly and efficiently. The detection engine of Azure Web Application Firewall, coupled with continuously updated rule sets, enhances security measures, minimizes false positives, and optimizes performance. Additionally, Azure Policy can be utilized to enforce organizational standards and assess compliance across Web Application Firewall resources on a large scale. By utilizing these tools, you can achieve a comprehensive overview of your environment's security posture. Ultimately, this proactive approach helps ensure your web applications remain secure and resilient against evolving threats.

WEDOS Protection offers a comprehensive security platform that combines advanced DDoS mitigation, CDN acceleration, and smart traffic filtering to safeguard websites against a wide range of cyber threats. It defends against large-scale volumetric attacks as well as sophisticated application-layer exploits like botnets and L7 attacks. Utilizing a global network of edge servers, the WEDOS Global infrastructure monitors and manages traffic in real time for optimal security and performance. Key features include DNS protection, a Web Application Firewall (WAF), HTTPS proxy, smart caching, and multiple anti-bot filters, all integrated to create a strong, multi-layered defense system. The solution is designed for easy deployment without requiring any changes to website code. It ensures high availability and low latency, even when under attack. WEDOS Protection is suitable for high-traffic websites, e-commerce projects, agencies, IT administrators, and hosting providers. This platform balances strong security with improved website speed and reliability.

High-performance advanced load balancing solution that enables your applications to be highly available, accelerated, and secure. Ensure efficient and reliable application delivery across multiple datacenters and cloud. Minimize latency and downtime, and enhance end-user experience. Complete full-proxy Layer 4 load balancer and Layer 7 load balancer with flexible aFleX® scripting and customizable server health checks. Increase application security with advanced SSL/TLS offload, single sign-on (SSO), DDoS protection and Web Application Firewall (WAF) capabilities.