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Mahipal
2fb6a9faff
Each rewritten description now states both what the skill does (concrete capability, named tools/artifacts) and an explicit when-to-use trigger, improving agent discovery/activation. Grounded in each skill's own body; changes confined to the `description` field only (bodies and all other frontmatter untouched). Produced by a gated audit->rewrite->recheck loop (548 -> 0 flagged) with a sampled anti-invention check (0 ungrounded). Schema: 817/817 pass. Framework-ID gate: 0 defects.
2.4 KiB
2.4 KiB
name, description, domain, subdomain, tags, version, author, license, nist_ai_rmf, atlas_techniques, nist_csf, mitre_attack
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| implementing-web-application-logging-with-modsecurity | Configure ModSecurity WAF with the OWASP Core Rule Set (CRS) for web application audit logging, tuning SecRuleEngine, SecAuditEngine, and CRS paranoia levels to reduce false positives, and writing custom SecRules for application-specific threats. Use when deploying or tuning a ModSecurity WAF, analyzing audit logs for attack detection, or reducing CRS false positives. | cybersecurity | web-application-security |
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1.0 | mahipal | Apache-2.0 |
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Implementing Web Application Logging with ModSecurity
Overview
ModSecurity is an open-source WAF engine that works with Apache, Nginx, and IIS. The OWASP Core Rule Set (CRS) provides generic attack detection rules covering SQL injection, XSS, RCE, LFI, and other OWASP Top 10 attacks. ModSecurity logs full request/response data in audit logs for forensic analysis and generates alerts that feed into SIEM platforms.
When to Use
- When deploying or configuring implementing web application logging with modsecurity capabilities in your environment
- When establishing security controls aligned to compliance requirements
- When building or improving security architecture for this domain
- When conducting security assessments that require this implementation
Prerequisites
- Web server (Apache 2.4+ or Nginx) with ModSecurity v3 module
- OWASP CRS v4.x installed
- Log aggregation infrastructure (ELK, Splunk, or Wazuh)
Steps
- Install ModSecurity and configure SecRuleEngine in DetectionOnly mode
- Deploy OWASP CRS v4 and set paranoia level (PL1-PL4)
- Configure SecAuditEngine for relevant-only logging
- Tune false positives with SecRuleRemoveById and rule exclusions
- Switch to blocking mode (SecRuleEngine On) after tuning period
- Forward audit logs to SIEM for correlation and alerting
Expected Output
ModSecurity: Warning. Pattern match "(?:union\s+select)" [file "/etc/modsecurity/crs/rules/REQUEST-942-APPLICATION-ATTACK-SQLI.conf"] [line "45"] [id "942100"] [msg "SQL Injection Attack Detected via libinjection"] [severity "CRITICAL"]