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mukul975
66 lines
2.1 KiB
Markdown
66 lines
2.1 KiB
Markdown
# ModSecurity WAF Logging — API Reference
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## Key ModSecurity Directives
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| Directive | Description |
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|-----------|-------------|
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| `SecRuleEngine On/Off/DetectionOnly` | Enable/disable rule engine |
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| `SecAuditEngine On/Off/RelevantOnly` | Configure audit logging scope |
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| `SecAuditLog /path/to/modsec_audit.log` | Audit log file path |
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| `SecAuditLogParts ABCDEFHZ` | Audit log sections to include |
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| `SecRequestBodyAccess On` | Inspect request bodies |
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| `SecResponseBodyAccess On` | Inspect response bodies |
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| `SecRuleRemoveById <id>` | Disable specific rule by ID |
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| `SecRuleUpdateTargetById <id> "!ARGS:param"` | Exclude parameter from rule |
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## Audit Log Sections
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| Section | Contents |
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|---------|----------|
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| A | Audit log header (timestamp, transaction ID) |
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| B | Request headers |
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| C | Request body |
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| E | Response body |
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| F | Response headers |
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| H | Audit log trailer (rule matches, scores) |
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| Z | End of entry marker |
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## OWASP CRS Rule ID Ranges
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| Range | Category |
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|-------|----------|
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| 911xxx | Method Enforcement |
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| 920xxx | Protocol Enforcement |
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| 930xxx | Local File Inclusion |
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| 932xxx | Remote Code Execution |
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| 941xxx | Cross-Site Scripting (XSS) |
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| 942xxx | SQL Injection |
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| 944xxx | Java/Spring Attack |
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| 949xxx | Inbound Anomaly Score Blocking |
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## CRS Paranoia Levels
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| Level | Description |
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|-------|-------------|
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| PL1 | Default — low false positives, covers common attacks |
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| PL2 | Moderate — adds more patterns, some tuning needed |
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| PL3 | High — aggressive detection, significant tuning needed |
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| PL4 | Extreme — maximum coverage, heavy tuning required |
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## Configuration Example
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```apache
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SecRuleEngine DetectionOnly
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SecAuditEngine RelevantOnly
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SecAuditLogRelevantStatus "^(?:5|4(?!04))"
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SecAuditLogParts ABCDEFHZ
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SecAuditLogType Serial
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SecAuditLog /var/log/modsec_audit.log
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```
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## External References
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- [ModSecurity v3 Reference Manual](https://github.com/owasp-modsecurity/ModSecurity/wiki/Reference-Manual-(v3.x))
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- [OWASP CRS Documentation](https://coreruleset.org/docs/)
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- [CRS Tuning Guide](https://coreruleset.org/docs/concepts/false_positives_tuning/)
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