Web Application

Lesson in the Network Engineer Roadmap · Stage 20: Encryption Basics

Last updated 14 September 2026

What is Web Application?

A Web Application Firewall (WAF) is a specialized security tool designed to filter, monitor, and block HTTP/HTTPS traffic to and from web applications. It protects against common web-based attacks such as SQL injection, cross-site scripting (XSS), and cross-site request forgery (CSRF) by inspecting application-layer traffic against a set of rules or policies. WAFs can be deployed as hardware, software, or cloud services and are an essential layer of defense for any publicly accessible web application.

Study this in the interactive course See the whole Network Engineer roadmap

Free resources to learn Web Application

ArticleWhat is a WAF?
VideoWhat is a Web Application Firewall (WAF)?

Web Application: common questions

Can I learn Web Application in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain Web Application in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this Web Application tutorial for beginners?

It is lesson 153 of 195 in the free Network Engineer roadmap, in stage 20, Encryption Basics. If you are new to Network Engineer, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.