Security

Web Application Firewall

WAF log events with OWASP CRS rule detections (SQLi, XSS, RCE, LFI, SSRF), bot management, rate limiting, geo-blocking, and CAPTCHA challenges — modeled after ModSecurity with realistic attack payloads and GeoIP data.

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Quick Start

uv tool install eventum-generator
git clone https://github.com/eventum-generator/content-packs.git
cd content-packs
eventum generate \
  --path generators/security-waf/generator.yml \
  --id waf-01 \
  --live-mode true

Event Types

Event ID	Description	Frequency	Category
allowed	Allowed Traffic	73.9%	web, network
sqli	SQL Injection	4.9%	web, intrusion_detection
xss	Cross-Site Scripting	3.9%	web, intrusion_detection
rate-limit	Rate Limiting	3.9%	web, intrusion_detection
bot-detection	Bot Detection	3.0%	web, intrusion_detection
rce	Remote Code Execution	2.0%	web, intrusion_detection
lfi	Local File Inclusion	2.0%	web, intrusion_detection
geo-block	Geo-Blocking	2.0%	web, intrusion_detection
captcha-challenge	CAPTCHA Challenge	1.5%	web, authentication
ssrf	Server-Side Request Forgery	1.5%	web, intrusion_detection
protocol-violation	Protocol Violation	1.5%	web, network

Realism Features

OWASP CRS 3.x/4.x rule IDs across 6 attack categories (SQLi, XSS, RCE, LFI, SSRF, protocol enforcement)
35 realistic attack payloads including SQL tautology, UNION injection, XSS event handlers, path traversal, and SSRF cloud metadata
45 target URLs spanning pages, APIs, static assets, and well-known paths
26 user agents covering browsers, mobile, bots, developer tools, and vulnerability scanners (sqlmap, nikto, nuclei)
GeoIP data for 18 cities across 14 countries with geo-blocking from restricted nations
MITRE ATT&CK tactic/technique mapping on all attack events

Sample Output

{
  "@timestamp": "2026-03-04T14:30:25.654321+00:00",
  "event": {
    "action": "denied",
    "category": [
      "web",
      "intrusion_detection"
    ],
    "dataset": "waf.log",
    "kind": "alert",
    "module": "waf",
    "outcome": "failure",
    "severity": 2,
    "type": [
      "access",
      "denied"
    ]
  },
  "http": {
    "request": {
      "bytes": 891,
      "method": "POST"
    },
    "response": {
      "status_code": 403
    },
    "version": "1.1"
  },
  "message": "SQL Injection Attack Detected via libinjection",
  "observer": {
    "hostname": "waf-prod-01",
    "product": "WAF",
    "type": "waf",
    "vendor": "ModSecurity"
  },
  "rule": {
    "category": "SQLI",
    "id": "942100",
    "name": "SQL Injection Attack Detected via libinjection",
    "ruleset": "OWASP CRS"
  },
  "source": {
    "ip": "198.51.100.73",
    "geo": {
      "city_name": "Moscow",
      "country_iso_code": "RU",
      "country_name": "Russia"
    }
  },
  "threat": {
    "tactic": {
      "name": [
        "Initial Access"
      ]
    },
    "technique": {
      "name": [
        "Exploit Public-Facing Application"
      ]
    }
  },
  "url": {
    "domain": "app.example.com",
    "path": "/api/v1/search",
    "scheme": "https"
  },
  "waf": {
    "action": "blocked",
    "anomaly_score": 15,
    "matched_data": "' OR 1=1--",
    "matched_var": "ARGS",
    "mode": "blocking",
    "rule_count": 2
  },
  "tags": [
    "waf",
    "attack-sqli"
  ]
}

Parameters

Parameter	Default	Description
hostname	waf-prod-01	WAF node hostname
server_name	app.example.com	Protected web application domain
server_ip	10.0.1.50	Backend server IP address
waf_vendor	ModSecurity	WAF product name
waf_mode	blocking	WAF operating mode (blocking/detection)
agent_id	c4f2e8a1-...	Filebeat agent UUID
agent_version	8.17.0	Filebeat agent version

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