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Difference between revisions of "Web Application Firewall"
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Revision as of 19:52, 15 September 2015
This is a countermeasure. To view all countermeasures, please see the Countermeasure Category page.
Description
A web application firewall (WAF) is an appliance, server plugin, or filter that applies a set of rules to an HTTP conversation. Generally, these rules cover common attacks such as cross-site scripting (XSS) and SQL injection. By customizing the rules to your application, many attacks can be identified and blocked. The effort to perform this customization can be significant and needs to be maintained as the application is modified.
A far more detailed description is available at Wikipedia.
Tools
OWASP projects of this type
- https://www.owasp.org/index.php/Category:OWASP_ModSecurity_Core_Rule_Set_Project
- NAXSI is a WAF for NGINX.
Choosing A WAF
Consider the Web Application Firewall Evaluation Criteria Project (WAFEC) to help evaluate commercial and open source web application firewalls.
