What is Web Application Firewall?

A web application firewall (or WAF) channels, screens, and blocks HTTP traffic to and from a web application. A WAF is separated from a regular firewall, in that a WAF can channel the substance of explicit web applications while ordinary firewalls fill in as a security door between servers. By reviewing HTTP traffic, prevent attacks stemming from web application security flaws, for instance, SQL injection, cross-site scripting (XSS), document incorporation, and security misconfigurations.

Web application firewalls are probably the most grounded guard a web application has, however they can be helpless if the firewall variant utilized is known to an aggressor. Understanding which firewall an object is utilizing can be the initial step to a programmer finding how to move beyond it and what guards are set up on an objective. What’s more, the instruments Wafw00f and Nmap make fingerprinting firewalls simple.

While most web app firewalls, or WAFs, are pretty good at defending the services they protect, they occasionally become vulnerable when an exploitable flaw is discovered. If a firewall hasn’t been updated in quite some time, it can be easy to figure out the rules of a firewall and work around them to establish a foothold inside. Manually doing this is incredibly tedious and relies on interpreting the distinctive ways that the WAF responds to specific web requests.

Some of the WAF providers:

Below are few of the Web Application firewalls that are widely used.

  • Cloudflare
  • Fortinet
  • Sucuri
  • Symantec

So, why Cloudflare?

According to; Cloudflare is one of the biggest networks operating on the Internet. People use Cloudflare services for the needs of accelerating the safety and performance of their internet sites and services.

Cloudflare conveys undertaking grade WAF for shielding the web property from SQL injection attacks, cross-site scripting, and cross-site fraud demands.

Cloudflare WAF gets naturally refreshed when another security defenselessness is discharged. It makes rules to alleviate the new dangers on the system.

For more grounded security, the Cloudflare WAF ensures the ventures against the best 10 OWASP (Open Web Application Security Project) vulnerabilities. These vulnerabilities incorporate touchy information introduction, XML External Entities (XXE), Broken Access Control, Security Misconfiguration, Cross-Site Scripting (XSS), Insecure Deserialization, Broken Authentication and Session Management, infusion, known vulnerabilities, deficient logging and observing.

Further, it assists undertakings with meeting the PCI consistency prerequisites to deal with the charge card data of customers. The PCI consistency can be met by conveying a WAF before the site, or by leading application powerlessness security surveys of in-scope web applications.

Apart from the WAF, cloudflare also provides a free Content delivery Network (CDN) which allows for the quick transfer of assets needed for loading Internet content including HTML pages, javascript files, stylesheets, images, and videos. A properly configured CDN may also help protect websites against some common malicious attacks, such as Distributed Denial of Service (DDOS) attacks. Below are the primary benefits of using the CDN.

  • Improving website load times
  • Reducing bandwidth costs
  • Increasing content availability and redundancy
  • Improving website security


We have an expert team to help you with the deployment/ implementation of the firewall.  In case of any queries reach out to us.  


Sr. Software Engineer