Posts tagged networking

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Filter: C Linux Internals Networking Reverse Engineering cloudflare go infrastructure meta networking quic security systemd x86-64
May 21, 2026 • 16 min read

What `cloudflared` Actually Does

A tunnel-based ingress that opens zero inbound ports is not 'nginx with less work.' It is a different architectural class with different failure modes and different security guarantees. Here is what the daemon is actually doing, operating two of them on a single VPS, and what I learned from the hours where the difference mattered.

cloudflare quic networking infrastructure security
May 4, 2026 • 22 min read

Defusing a Bomb That Wanted to Phone Home

The CS:APP bomb lab, defused off-campus: an LD_PRELOAD shim, a seventy-line fake grader, and a walk through all six phases plus the secret one.

C x86-64 Reverse Engineering Linux Internals Networking