Web application firewall is a necessity as it inspects the traffic to web servers and applications. It filters and blocks the bad HTTP and the HTTPs traffic. By doing so, it successfully prevents security defects like the SQL injection, cross-site scripting(XSS), remote file inclusion (RFI), cookie poisoning, security misconfigurations, and similar.
WAF is also necessary for SSL offloading. Websites today use the HTTPs encrypting data even if they do not have any sensitive information to protect. The
SSL certificates are hosted on the WAF and the encryption is terminated there. The traffic is moved to the web application in HTTP and scrutinized. WAF divides the traffic between a
web server and the internet it works as a reverse or inbound proxy.
Several times, applications are built without giving much importance to the security aspect. People still use the app as it is vital for their business. However, this exposes them to lots of risks.
WAF comes with a configurable layer that allows the users to create specific signatures. The users can have their own protection for the web applications without running any security risks. WAF has the capability to easily grasp the user behavior and ensure the safety of critical applications by adapting itself to prevent any new attacks.