AWS WAF Explained | Layer 7 Security, SQL Injection & XSS Protection

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In this tutorial, we explain AWS WAF (Web Application Firewall) and how it protects your applications at Layer 7 (Application Layer).

You’ll learn the difference between WAF vs Security Groups vs NACLs, how WAF inspects HTTP/HTTPS traffic, and how it protects against common attacks like SQL Injection and Cross-Site Scripting (XSS).

🔹 Key Topics Covered:

What is AWS WAF?
OSI Model overview (focus on Layer 7)
Layer 3/4 vs Layer 7 security
Why Security Groups & NACLs are not enough
How WAF inspects request content
Protecting against:
SQL Injection
Cross-Site Scripting (XSS)
Supported services:
CloudFront
Application Load Balancer
API Gateway
AppSync
Why WAF cannot be used with Network Load Balancer (NLB)
Web ACLs and rules

📘 Perfect for:
AWS exam takers (Solutions Architect, Security, CCP), cloud engineers, and anyone building secure web applications on AWS.

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⏱️ Timestamps

00:00 – Intro to AWS WAF
00:25 – OSI Model overview
01:00 – Layer 3/4 vs Layer 7 explained
01:40 – What makes WAF different
02:10 – Supported AWS services (ALB, CloudFront, API Gateway)
02:40 – Web ACLs and rules
03:05 – SQL Injection & XSS protection
03:30 – Why WAF doesn’t work with NLB
04:05 – Exam tips & common traps
04:30 – Summary

🧠 Hashtags

#AWSWAF #WebSecurity #AWS #CloudSecurity
#AWSExamPrep #CloudWolf #CyberSecurity #Layer7

Видео AWS WAF Explained | Layer 7 Security, SQL Injection & XSS Protection канала CloudWolf AWS