Hardened Public VPS
A public-facing Linux server on Oracle Cloud, hardened from cloud console to service user. Deployed, run, and documented as the free-tier instance was decommissioned.
Linux
Designing User Roles: Least Privilege in Practice
Three users, three roles, three blast radii. How I scoped permissions so compromise doesn’t cascade.
Hardening SSH
Within minutes of going live, bots were already knocking. Here’s how I locked them out.
Choosing the Platform: Oracle Cloud and Oracle Linux
Why I picked Oracle Cloud’s free tier and Oracle Linux for a production-style home lab.
Lodestone
A network packet capture and analysis tool written in C, built from the syscall up. Two capture paths, layered protocol parsers, TCP stream reassembly, and a small set of anomaly detectors.