Infrastructure Security

Production security implementations focusing on zero-trust architecture, minimal attack surface, and defense in depth.

Featured Implementation

Cloudflare Zero Trust

A complete production implementation that solved four critical problems:

1. Traffic Separation: Public CDN vs. private tool access
2. Identity-Based Access: Email OTP/SSO for management tools
3. Infrastructure Access: WARP-only SSH and kubectl (no open ports)
4. DDoS Protection: Automatic protection at Cloudflare edge

Complete 7-part guide:

1. Overview - Why and what we’re solving
2. Phase 1: Tunnel Setup - Cloudflared installation and configuration
3. Phase 2: Public Services - CDN and caching
4. Phase 3: Private Services - Access control for management tools
5. Phase 4: Infrastructure Access - WARP for SSH/kubectl
6. Troubleshooting - Common issues and solutions
7. Performance & Metrics - Real-world results and ROI

Security Principles

• Zero Trust: Never trust, always verify - no network perimeter
• Minimal Attack Surface: Close all unnecessary ports
• Defense in Depth: Multiple layers of security controls
• Least Privilege: Grant minimum required access
• Audit Everything: Complete logging and monitoring
• Automation: Security controls as code

Before & After

Before Zero Trust:

SSH ports: OPEN to internet (15,000 brute force attempts/day)
kubectl API: OPEN to internet (port 6443)
Management tools: No authentication
DDoS protection: None

After Zero Trust:

SSH ports: CLOSED (WARP-only access, 0 brute force attempts)
kubectl API: CLOSED (WARP-only access)
Management tools: Email OTP/SSO required
DDoS protection: Automatic at Cloudflare edge (172 Tbps capacity)