Technical Blog

Deep dives into the protocols that power the internet.

WebRTC Leaks: How STUN Requests Expose Your Real IP Behind VPN

Your VPN is on, your DNS is secure, but a simple JavaScript call reveals your real home IP. Understanding the STUN protocol and how to disable WebRTC.

5G NSA vs. SA: The Latency Lie

Your phone says 5G, but your ping is the same as 4G. Why? Because you are on "Non-Standalone" (NSA) 5G.

SQM: Configuring fq_codel and CAKE to Fix Bufferbloat

QoS is outdated. Smart Queue Management (SQM) is the modern fix. We explain how fq_codel and CAKE algorithms work.

LEO Satellite Internet: The Physics of Starlink Jitter

Low Earth Orbit (LEO) solves the latency problem of old satellite internet, but introduces a new one: Micro-Jitter from satellite handover.

DFS Channels: Why Your 5GHz Wi-Fi Randomly Disconnects

Your router logs show "Radar Detected." We explain Dynamic Frequency Selection (DFS) and why living near an airport kills your high-speed Wi-Fi channels.

BBR vs CUBIC: The Battle of TCP Congestion Control Algorithms

YouTube switched to BBR and saw 4% higher throughput. What makes BBR different from the loss-based CUBIC algorithm? Deep dive into TCP congestion control.