A Web Application Firewall (WAF) is a security system that monitors, filters, and blocks HTTP traffic to and from a web application. It operates at the application layer of the OSI model, meaning it can analyze the content of HTTP requests and responses. The primary purpose of a WAF is to protect web applications from various attacks, such as cross-site scripting (XSS), SQL injection, and other common web exploits.
What a WAF does:
What a WAF does:
- Traffica Monitoring: It inspects incoming and outgoing web traffic, analyzing the HTTP requests and responses for malicious content or suspicious behavior.
- Filtering: Based on predefined rules or custom configurations, the WAF filters out potentially harmful requests before they reach the web application. This filtering can include blocking specific IP addresses, URLs, or patterns known to be associated with attacks.
- Protection Against Common Web Attacks: WAFs are designed to detect and prevent various types of attacks, including SQL injection, cross-site scripting (XSS), cross-site request forgery (CSRF), and more.
- Logging and Reporting: WAFs often provide logging and reporting capabilities, allowing administrators to monitor traffic patterns, detect potential threats, and investigate security incidents.
- Custom Rules: Administrators can create custom rules tailored to the specific needs of their web application, providing additional layers of protection against emerging threats or application-specific vulnerabilities.
