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AWS WAF Security

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एका दृष्टिक्षेपात

AWS WAF (Web Application Firewall) is layer 7 protection: rule-based request filtering for CloudFront, API Gateway, Application Load Balancer, AppSync. Define rules: block by IP reputation, rate limit requests, match regex patterns (SQL injection, XSS), block by geography, validate headers. Integrates with Shield for DDoS mitigation. Why it matters: blocks 90% of application attacks without requiring application code changes. One malicious request can exploit a bug; WAF rules prevent exposure. Learning path: 1 week basics (IP lists, rate limiting, regex patterns), 1 week intermediate (custom rules, testing), 1 month production (monitoring, threat intelligence feeds, cost optimization).

AWS WAF Security म्हणजे काय

AWS WAF (Web Application Firewall) is a layer 7 firewall, it inspects HTTP/HTTPS requests and blocks malicious ones. Unlike Shield (which protects against DDoS volume), WAF protects against intelligent attacks: SQL injection, XSS, credential stuffing, bot attacks, cache-busting. WAF is rule-based: define rules (block if User-Agent matches bot pattern, block if request body contains SQL injection signature, rate limit if IP makes >100 requests/min). Attach to CloudFront, API Gateway, Application Load Balancer, or AppSync.

🔧 साधने आणि परिसंस्था
AWS WAFAWS ShieldCloudFrontApplication Load BalancerAPI GatewayCloudWatchAWS LambdaRegex patterns

📋 सुरू करण्यापूर्वी

Cloud SecurityCloud Platforms

💰 प्रदेशानुसार पगार

प्रदेशज्युनियरमध्यमसीनियर
USA$85k$130k$190k
UK£50k£80k£125k
EU€55k€85k€135k
CANADAC$90kC$125kC$180k

🎯 AWS WAF Security वापरणारी करिअर

Backend Developer
Cloud Architect
Technical Architect

⚖ यांच्याशी तुलना करा

Cloud SecurityAws Shield DdosCybersecurity

❓ FAQ

WAF vs Shield, what's the difference?
Shield: DDoS protection (volume-based, layer 3/4). WAF: web application firewall (layer 7, rule-based, blocks malicious requests). Use both. Shield blocks attacks that overwhelm with traffic; WAF blocks smart attacks (cache-busting, credential stuffing, SQL injection).
What are the most important WAF rules?
AWS Managed Rules cover 90% of threats: Core (SQL injection, XSS), Known Bad Inputs (exploit payloads), Bot Control (automated attack detection), Rate Limiting (DDoS layer 7). Start with Core and Rate Limiting, add Bot Control for high-value targets.
How do I prevent false positives (blocking legitimate traffic)?
Test rules in Count mode first (logs matches without blocking). Review logs. Adjust regex patterns to be more specific. Use allowlists (IP whitelist, known-good requests) to exclude from rules. Gradually roll out to Block mode.
Can I block requests from specific countries?
Yes. Geo-blocking rule: match requests from specific countries (via MaxMind GeoIP database AWS provides). Useful for compliance (ITAR restricts exports to certain countries) or reducing attack surface (e.g., block if primary business is US-only).
What's the cost of WAF rules?
Pricing: $5/month per rule (first 10 free), $0.60 per GB of traffic evaluated. Most customers: $20–50/month. High-traffic sites: $200–500/month. Managed Rules cost extra: $2–20/rule/month depending on rule set.
Should every application use WAF?
Yes, if public-facing. No, if internal-only (behind VPC, no internet exposure). Critical services (payment, auth, PII): mandatory. Low-risk services: optional. Cost vs risk trade-off.
How do I respond to a new exploit (zero-day)?
Update AWS Managed Rules (automatic if enabled) or create custom rule in hours. WAF update is instant, no application redeploy. This is why WAF is critical for zero-day protection.

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