What Is a Firewall?
Learn what a firewall is, how firewalls work, and why they are essential for protecting home and business networks from cyber threats.
What Are Modems, Routers, and Switches?
Learn what modems, routers, and switches are, how they work, and the key differences between them in modern networking environments.
Beginner SSH Key Setup Guide
Learn how to securely set up SSH keys on a MacBook Pro, store passphrases in macOS Keychain, and use SSH efficiently with iTerm2 and SecureCRT using easy, copy-and-paste commands.