Engineering case studies

Protocol education and analysis platform in the W. Richard Stevens tradition: annotated PCAP decode, guided reading, learning paths, protocol playground, multiplayer analysis sessions, legacy hall.

↳ The book I learned from, rebuilt as software.

Pre/post upgrade behavioral validation, CVE exposure mapping, config drift detection and real-time upgrade telemetry across a large firewall fleet.

↳ Upgrade risk made measurable before the change window opens.

Network intelligence and BGP cascade forensics platform — reconstructing propagation, blast radius and timing after a routing event.

↳ Answering what actually happened, once the event is over.

Cross-tenant Cloud NGFW hub design and tenancy model for a large healthcare enterprise.

↳ Tenancy boundaries that survive an org chart.

Remote-access pattern for absorbing acquired networks without collapsing address space or trust.

↳ A repeatable integration path instead of a bespoke one per acquisition.

Early adopter of Palo Alto Networks' firewall migration tool, and a member of the customer group that helped frame key requirements during its early development. Historical.

↳ Where the validate-both-ends migration methodology came from.