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ModSecurity rule development … pitfalls ! Recently I’m more and more involved in development of web application firewall (waf) rules, for blocking diverse attack vectors and protecting web applications. In the course of rule writing, there were some little faults, which caused me to loose tens of hours for debugging, testing and deep duck into… Continue reading ModSecurity (WAF) – Pitfalls during security rule development
Using ModSecurity for filtering application level requests is great. Let suggest you have been successfully using ModSecurity for filtering, attack detection/prevention and all kind of weird stuff. Then you suddenly come to the moment, when you need to parse TEXT/XML request bodies….well here comes the HELL. In order to make anything clear I… Continue reading ModSecurity (WAF) 2.9.0 parsing and matching upon text/xml request bodies
Sooner or later, people decide that they need to parse response body in order to detect or prevent some malicious activity. Web application firewalls are useful for exactly the same goal. Whenever it comes to WAF, Mod security is the DIY tool for many people. It has nice integration for parsing response body, but there… Continue reading ModSecurity (WAF) – Parsing the response body or what you need to know about it