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CompTIA Security+ SY0-301: 6.1 – Hashing

The cryptographic hash provides some important validation functions. In this video, you’ll learn the basics of cryptographic hashing and how they can be used to provide confidentiality, authentication, non-repudiation, and integrity.

CompTIA Network+ N10-004: 6.2 – Firewalls

Firewalls are one of the most fundamental security components in our modern networks, but not all firewalls are created equally. In this module, you’ll learn about common features of modern firewalls, such as network-layer and application-layer firewalls, stateful vs. stateless operation, content filtering, signature identification, and zone-based security.