collininfosec

Terminal Tales

Hands-on Linux security hardening — accounts, PAM, and the gates that keep a box honest.

  1. Terminal Tales: Start Here

    Part 1 · July 24, 2025

    The starting line for the Terminal Tales Linux hardening series: how to actually build real Linux skills from zero (daily-drive a live install, free Professor Messer and TryHackMe paths, and an honest take on certs) before diving into the hands-on hardening posts.

  2. Terminal Tales: Securing the User Jungle

    Part 2 · July 25, 2025

    A practical guide to Linux account hardening: password quality and aging, controlling root access, per-user resource limits, centralized authentication, and monitoring user activity across the system.

  3. Terminal Tales: PAM Like a Pro

    Part 3 · August 9, 2025

    A hands-on tour of Linux PAM: how the stack works, deliberately locking yourself out with /etc/nologin and sshd config, a safe toggle script to get back in, brute-force protection with pam_faillock, and auditing sudo activity.