Dispatches

Field notes, series, and standalone pieces on network and network security architecture — plus whatever doesn't fit anywhere else.

Pick Any Two, Revisited

The CAP theorem from the network side of the wire. Part 1 of a series on reachability, routing and the P in CAP.

iperf, ttcp, hping3 and pchar on a path with a known answer, and why the window, the loss and the round trip set the number.

Reading tcpdump filters byte by byte, and the 20-byte assumption that breaks the classic recipes.

MAGA, recognition, and the failure of the End of History — read through Hegel, Kojève, Fukuyama, and Capra.

The architecture of agentic security, and what the terminology obscures.