Deep dives into the protocols that power the internet.
DNS was designed without security. DNSSEC adds digital signatures to prevent cache poisoning and man-in-the-middle attacks. Here is how the chain of trust works.
The same IP address answering from 300 cities worldwide? That is Anycast routing. Learn how 1.1.1.1 and 8.8.8.8 use BGP to direct you to the nearest server.
HTTP/3 replaces TCP with QUIC, eliminating head-of-line blocking and enabling 0-RTT connections. Learn how QUIC achieves reliability over UDP and why it is the future of web performance.
Pages load halfway and hang? Images do not appear? You likely have an MTU mismatch inside your VPN tunnel.
High ping is not always your fault. We dissect the anatomy of a network request, separating local loop issues from tier-1 backbone congestion.
Forget the browser. Real engineers use the terminal. A curated list of essential tools like Dog, MTR, and Nmap for network diagnostics.