ModSecurity: Open Source Application Firewall
Date Posted: March 11, 2005 10:08 AM
Author: Mel Beckman
Many successful network penetrations use attacks against Web-based applications: SQL server injection, HTTP path evasion, embedded argument manipulation, and cross-site scripting - to name just a few. The problem is that ordinary network firewalls don't inspect application-layer data, and so can't protect against these attacks. ModSecurity is a nifty open-source application firewall that anyone can deploy at low cost to help protect Apache-based Web servers against common application vulnerabilites.

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