Original Post: Setup Custom AWS WAF (Web Application Firewall) Rules. | by Ravi Channavajhala | Jun, 2024
This article explores advanced cybersecurity strategies, focusing on protection against sophisticated Layer 7 (Application Layer) attacks on AWS-hosted applications. It highlights the increasing threat posed by these attacks and the essential need for robust application security to prevent potential revenue and reputational losses.
The main topic is the use of AWS Managed WAF (Web Application Firewall) to defend against these threats. The article provides a detailed discussion on writing custom WAF rules and attaching them to AWS resources. Key concepts like Web Access Control Lists (web ACL), rule statements, and common web exploits (e.g., SQL Injection, Cross-Site Scripting) are explained. The article includes two use cases:
- Preventing Insecure Deserialization Attacks: A custom WAF rule detects and blocks insecure deserialization patterns using regex patterns.
- Geolocation-Based Access Control: This involves creating rules to block requests from specific geolocations, limit the rate of requests, and protect against XSS attacks. It uses rule groups to combine these rules efficiently.
The article concludes by summarizing the importance of custom WAF rules and AWS features in protecting against Layer 7 attacks and ensuring application security in AWS environments.
Go here to read the Original Post