Episode 61 — Crypto Tools: VPNs, SSH, GPG, and Disk Encryption

Encryption moves from theory to practice through the tools we use every day, and this episode explores how they work together to protect data in motion and at rest. You’ll learn how Virtual Private Networks (VPNs) create secure tunnels between systems, encrypting traffic to prevent eavesdropping or tampering. We explain the differences between IPsec, SSL, and modern WireGuard-based implementations, emphasizing how key exchange, integrity checks, and endpoint verification ensure trust. The episode then examines Secure Shell (SSH), showing how it provides encrypted remote access and command execution while relying on public-key authentication for both convenience and resilience.Listeners will also discover how encryption tools like GPG (GNU Privacy Guard) and full-disk encryption utilities safeguard data at rest. We cover concepts like keyrings, signatures, and passphrase protection, explaining how these methods ensure confidentiality, authenticity, and recovery capability. Practical examples connect the dots—signing software releases, encrypting backups, and securing laptop drives—illustrating how each tool supports a specific layer of defense. By the end, you’ll see cryptography not as an abstract discipline but as an everyday utility shaping confidentiality, identity, and integrity across environments. Produced by BareMetalCyber.com, where you’ll find more cyber audio courses, books, and information to strengthen your educational path. Also, if you want to stay up to date with the latest news, visit DailyCyber.News for a newsletter you can use, and a daily podcast you can commute with.

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