SEC406: Linux Security for InfoSec Professionals

Section one covers the Linux operating system, kernel, and terminal basics. You will learn to navigate the file system, execute programs, and refine search results using manual pages. The section also explores command history, completion, and file management. It concludes with mastering the Visual Editor for security and administration.

This section expands on terminal skills, focusing on file search, grep usage, and system customization with variables and aliases. You will learn to manage accounts, groups, and file ownership. Advanced file management techniques, including creating, copying, moving, deleting, and using filters and pipes, are also covered.

Section three covers user access control, least-privilege enforcement, and security in Linux. You will learn to manage users, groups, and permissions, translating skills from networking or Windows backgrounds. This section also covers securing administrative credentials and auditing system settings to ensure proper security configurations.

As you migrate to the cloud and use containers, limiting resource consumption helps prevent unexpected costs and ensures server availability. In Section 4, you’ll learn to manage processes, handle core dumps, and enhance incident response with task scheduling, user activity records, and log management.

Section five covers package management, remote server management via SSH, and networking. You’ll learn to use package managers, manage Python virtual environments, and compile packages. The section also covers encryption, secure communication with SSH, SCP, OpenSSL, and managing networking and firewalls.