offby1n
offby1n
Student building toward AI infrastructure and platform engineering — servers, networking, containers, Kubernetes, GPU serving — one infra layer a month, built and documented in a homelab I run myself.
Public subnet / CIDR calculator, deployed and hardened solo: self-hosted on AWS EC2 (Amazon Linux 2023, eu-north-1) behind nginx with HTTPS via Let's Encrypt, fronted by Cloudflare with the origin locked to Cloudflare IP ranges, fail2ban, security headers and automatic security updates.
TCP port scanner and network monitor, command line. Standard library only, no third-party dependencies. argparse-driven interface with an install script.
Threaded download-speed CLI. Standard library only, no third-party dependencies. Class-based, multiple concurrent streams.
TCP honeypot and connection logger. Standard library only, no third-party dependencies. Server sockets, threading, locks.
Logs CPU, RAM and disk usage to a CSV file for later review.
Public documentation repo for the 10-layer infra track: per-layer write-ups, network diagrams, sanitised configs.
Self-directed, one infrastructure layer a month, documented publicly.
Published in the homelab repo.
Layer 1 of the track: subnetting, DHCP, DNS, NAT, stateful firewalling, WireGuard.
Standalone write-up: taking a public tool to production on AWS from scratch.
Hardware and software actually running the track above.