CISSP Mastery
All domains
Domain 413% of exam

Communication and Network Security

3 lessons ~2h

0%
0/3

Networking through a security lens. The OSI and TCP/IP models anchor everything; layer on secure protocols, modern segmentation (VLANs, micro-segmentation, zero trust), wireless and cellular, SDN/SD-WAN, and secure channels for voice, remote access, and third-party connectivity.

Start studying Practice this domain

Recommended reading

Official Study Guide (Sybex) 10eCh. 11–12Eleventh Hour CISSPDomain 4

Lessons

  1. 4.1

    Apply secure design principles in network architectures

    Know the OSI 7 layers and TCP/IP mapping cold, where each secure protocol operates (IPSec, SSH, TLS), and modern segmentation strategies up to micro-segmentation and zero trust.

    ~55 min

  2. 4.2

    Secure network components

    Secure the physical and access layers of the network — infrastructure operation/redundancy, transmission media, NAC, and endpoint security.

    ~30 min

  3. 4.3

    Implement secure communication channels according to design

    Apply secure-channel design to real services: voice/video/collaboration, remote access, data communications, and third-party connectivity.

    ~30 min