WAFs protect web applications against threats such as:
Cross-site scripting
SQL injection
Session hijacking
Denial of service
Buffer overflows
WAFs generally present the following features:
Libraries of attack data based on known attacks to web applications
Monitoring, filtering and blocking of data and access to web applications
Automated attack detection, both identity-based (e.g. dynamic whitelisting, fingerprinting, risk scoring) and behavioral (e.g. risk scoring)
Advanced security techniques (e.g. deception/misdirection, virtual patch deployment, honeypot)
Zero-day attack prevention (related to the above)
A management interface with alert system
Reporting and analytics on threat and application usage
The cost of web application firewalls depends on deployment. There are three options:
A managed service or cloud-hosted WAF delivered as part of a subscription. This can be relatively low overhead as part of a larger subscription (e.g. part of a CDN). But it also may contain unneeded features.
A network-based appliance. This presents relatively high overhead but reduces latency because it is installed locally and close to the application.
A host-based WAF residing in the application’s code. This is rarer and may present less desirable computing costs and greater maintenance.
According to NGINX, a business unit of F5 Networks since the May 2019 acquisition, NGINX powers over 65% of the world's busiest websites and web applications. NGINX started out as an open source web server and reverse proxy, built to be faster and more efficient than Apache. Over the years, NGINX...
CloudFlare, from the company of the same name in San Francisco, provides DDoS security to business domains, as well as a content delivery network (CDN) and web application firewall (WAF).
F5 BIG-IP software from Seattle-based F5 Networks is a load balancing and application protection solution suite available on cloud or via virtual editions, on a subscription or perpetual licensing basis. The BIG-IP suite of products supports a wide range of security and application performance ne...
Oracle Dyn Web Application Security Platform extends beyond just typical Web Application Firewall (WAF) capabilities to offer Access Control, Bot Management, application DDoS protection and API security.
Amazon Web Services offers AWS WAF (web application firewall) to protect web applications from malicious behavior that might impede the applications functioning and performance, with customizable rules to prevent known harmful behaviors and an API for creating and deploying web security rules.
Barracuda Web Application Firewall, from Barracuda Networks in Campbell, California, protects web applications from bots, DDoS attacks, and other advanced threats to enterprise apps.
Alert Logic Web Security Manager (WSM) is a web application firewall and web application intruder detection system available in standard and premiere versions. Alert Logic's managed WAF is also part of the company's Enterprise level service.
The Imperva Web Application Firewall (WAF) is based on technology acquired with Incapsula and the former WebSphere WAF.
Comodo Cybersecurity headquartered in Clifton offers cWatch, a website malware and vulnerability scanner that provides content filtering as well at the free service level, and at paid premium subscription levels supplies WAF, DDoS protection, as well as load balancing and website performance prot...
The StackPath (formerly Highwinds) Content Delivery Network provides a scalable DNS with load balancing, traffic management, DDoS protection and Web Application Firewall (WAF) to support and protect enterprise websites and applications.
Cloudbric is a cloud-based web security provider, offering a Web Application Firewall (WAF), DDoS protection, and SSL. Its WAF component protects web applications from the most critical web app security risks as identified by OWASP, including DDoS attack, SQL injection, and cross-site scripting....
Akamai offers their web application firewall and application security applications, including Kona Site Defender, a web application security platform designed to protect web and mobile assets from targeted web application attacks and DDoS attacks while improving performance.
FortiWeb is Fortinet's web application security system (or web application firewall, WAF) featuring advanced vulnerability management and threat detection and prevention, available in deployment as an appliance or virtual appliance, also as a hosted or a cloud-based virtual solution.
F5 Networks offers the Advanced Web Application Firewall (WAF) to provide bot defense, advanced application protection, anti-bot SDK, and other features.
Positive Technologies headquartered in Framingham offers the PT Application Firewall (AF), a web application firewall (WAF) which uses advanced machine learning and correlative techniques to detecting and prevent zero-day attacks on enterprise apps.
Radware offers AppWall, a PCI compliant web application firewall (WAF) securing corporate networks and the cloud against web app attacks.
German company Rohde & Schwarz offers the R&S Web Application Firewall to protect enterprise apps against data leakage, disablement, identity theft and intrusion.
WAPPLES utilizes an intelligent detection engine to protect enterprise from advanced web-based attacks, including SQL injections, DDoS, and APTs. The vendor says that WAPPLES’ ease of deployment and low operational workload have been cited as main reasons for high customer satisfaction. WAPPLES i...
CenturyLink® Web Application Firewall (WAF) delivers substantial web application protection from attacks and helps prevent costly data breaches and downtime. WAF delivers dynamic ongoing website protection, allowing application transactions only from authorized users and protecting critical data ...
Qualys offers their Web Application Firewall (WAF), available on its own or as part of the Qualys Cloud Platform network and application vulnerability management suite.
SonicWall offers their WAF Series, of web application firewalls.
Bekchy is a cloud-based web application firewall, developed by Faydata Information Technologies Inc. Bekchy works in front of all web application servers. According to the vendor, Bekchy is used by finance, health, education, tourism and media sectors. It provides basic and advanced protection f...
Sangfor NGAF is a combined NGFW and Web Application Firewall. It provides a full core suite of firewall services scaled for enterprises.
Instart Web Security is designed to secure your web apps from the dangers of the public web. All entry points into your application servers, whether it be your website, your APIs, or your web apps can be protected and secured with Instart Web Security. Instart provides protection across the entir...