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

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.

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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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.

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.

Achieve thorough security for both on-premises and multi-cloud environments utilizing an integrated firewall solution tailored for cloud protection. The frictionless, cloud-based Advanced Threat Protection system identifies and neutralizes sophisticated threats such as zero-day vulnerabilities and ransomware attacks. With access to a global threat intelligence network powered by millions of data points, you can swiftly defend against emerging threats. Modern cyber risks like ransomware, advanced persistent threats, and targeted assaults necessitate increasingly advanced defensive strategies that provide precise threat identification alongside prompt action. The Barracuda CloudGen Firewall delivers a complete suite of next-generation firewall technologies, ensuring immediate protection against a wide array of network dangers, vulnerabilities, and exploits, including SQL injections, cross-site scripting, denial of service attacks, trojans, viruses, worms, spyware, and beyond. This robust solution not only enhances security but also streamlines compliance with industry regulations, making it an essential component for any organization aiming to safeguard its digital assets.

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.

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*

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.

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.

The R&S® Web Application Firewall (WAF), when paired with a network firewall, greatly enhances your organization's security posture. This combination ensures that your IT infrastructure meets contemporary standards for resilience and protection. Drawing on decades of expertise and development, our web application firewall effectively shields the corporate network from common threats, including zero-day vulnerabilities, SQL injection attacks, cross-site scripting, and Distributed Denial of Service (DDoS) incidents at the application level. It provides robust safeguards for essential enterprise applications, encompassing both legacy systems and tailored APIs, while adhering to data protection laws. As businesses increasingly depend on web-based solutions, the significance of web applications within organizations continues to rise, leading to a growing exploitation of their weaknesses by cybercriminals. Consequently, implementing a comprehensive security strategy is vital to combat these evolving threats.

It can take many hours to configure traditional web application firewalls. Barracuda WAF as-a-Service, a cloud-delivered application security solution, is a better choice. Deploy it, configure it, and put it into full production--protecting all your apps from all the threats--in just minutes.

Wallarm Advanced WAF protects websites and APIs from OWASP Top 10 bots and application abuse. There is no need to configure rules and there are very few false positives. Protect against all types of threats. XSS, XXE and SQL Injections. RCE and other OWASP Top 10 Threats. Brute-force attacks, Dirbusting, and Account Takeover (ATO) are all possible. Application abuse, logic bombs, and bots. 88% of customers use Wallarm Advanced Cloud Native WAF in blocking mode. Automatically created rules that are not signed and tailored for each application. High-quality, reliable, and highly available filtering nodes. You can deploy in any cloud. Modern tech stack support: Docker, Kubernetes, websockets. DevOps toolchain manages and scales it.

Reblaze is a cloud-native, fully managed security platform for websites and web applications. Reblaze’s all-in-one solution supports flexible deployment options (cloud, multi-cloud, hybrid, DC), deployed in minutes and includes state-of-the-art Bot Management, API Security, next-gen WAF, DDoS protection, advanced rate limiting, session profiling, and more. Unprecedented real time traffic visibility as well as highly granular policies enables full control of your web traffic.

Comprehensive Safeguarding for Applications and Container Workloads. Immediate Protection Against Zero Day Attacks. The K2 Security Platform excels in identifying increasingly complex threats aimed at applications, often overlooked by traditional network and endpoint security systems such as web application firewalls (WAF) and endpoint detection and response (EDR). K2 offers a user-friendly, non-invasive agent that can be set up in just a few minutes. By employing a deterministic method known as optimized control flow integrity (OCFI), the K2 Platform constructs a runtime DNA map of each application, which is essential for verifying that the application is functioning correctly. This innovative approach leads to highly precise attack detection, significantly reducing false positives. Additionally, the K2 Platform is versatile, capable of being utilized in cloud, on-premise, or hybrid environments, and it effectively safeguards web applications, container workloads, and Kubernetes. Its coverage extends to the OWASP Top 10 and addresses various types of sophisticated attacks, ensuring comprehensive protection for modern digital infrastructures. This multilayered defense strategy not only enhances security but also fosters trust in application reliability.