Blog


Why are X-Forwarded-For and Forwarded Headers Useful?

http networking security

Learn how X-Forwarded-For and Forwarded HTTP headers help preserve client IP addresses through proxies and load balancers. Understand their use cases for logging, security, rate limiting, and geolocation.

How does NAT traversal work?

networking NAT peer-to-peer

Learn how NAT traversal enables peer-to-peer connectivity through firewalls and routers. Understand STUN, TURN, ICE protocols, hole punching techniques, and practical implementation strategies.

Top 5 Best Self-Hosted VPNs in 2026

VPN self-hosted WireGuard

Discover the best self-hosted VPN solutions in 2026. Compare WireGuard, AmneziaVPN, Headscale, NetBird, and WG-Easy for privacy, security, and performance.

How Cloudflare Incident Affected 2.4 Billion Internet Users

cloudflare outage incident

Deep dive into the November 18, 2025 Cloudflare outage that disrupted 2.4 billion users across ChatGPT, X, Spotify, Canva, and more. Technical breakdown of the Bot Management bug, financial impact analysis, and lessons learned from one of the internet's worst outages since 2019.

How to Host Your AI App on Google Colab for Free

Google Colab Ollama Flask

Learn how to build and host a complete AI-powered Flask application on Google Colab with free GPU access. Use Ollama for LLM inference and Pinggy for public access - no server costs required.