The Cyber Leader - Balanced Security

The Cyber Leader - Balanced Security

Understanding CISSP Domain 4: Communication and Network Security - Part 2

Jeffery Moore's avatar
Jeffery Moore
Nov 21, 2025
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Communication and Network Security covers the design and protection of enterprise network architecture, secure communication channels, and the technologies used to move and protect data across those networks.

In Part 1, we covered the application of secure design principles in network architectures, including the OSI and TCP/IP models, IPv4 and IPv6, authentication and VPN protocols, and network attacks. In Part 2, we continue with multilayer protocols, network topologies and technologies. Let’s dive into the domain and cover the material by continuing to follow the ISC2 exam outline.

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