CISSP Domain 4: Network & Communication Security 2026

🎙️ Welcome to the CISSP Domain 4: Communication and Network Security Podcast

Domain 4: Communication and Network Security focuses on the design and protection of network architecture, communication channels, and the secure transmission of data. This domain ensures that information remains confidential, maintains integrity, and is available during transit over both public and private networks.

CISSP Domain 4
0:00 – Introduction to CISSP Domain 4 & Defense in Depth
2:59 – Network Segmentation & DMZ
8:51 – Proxy Servers
10:31 – NAT & PAT
12:14 – Firewalls (Packet, Stateful, Application, NGFW)
15:47 – Intrusion Detection/Prevention Systems (IDS/IPS)
22:19 – Honeypots & Honeynets
23:49 – Ingress vs. Egress Monitoring
25:38 – OSI & TCP/IP Models Overview
39:07 – IPv4 & IPv6
45:53 – Secure Authentication Protocols (Kerberos, SSL/TLS)
1:00:40 – Network Performance Metrics
1:09:35 – Microsegmentation & Zero Trust
1:11:02 – Edge Networks & CDNs (part 1)
1:12:40 – Wireless Network Challenges & Bluetooth
1:14:30 – Wi-Fi Standards & Encryption (WEP, WPA, WPA2, WPA3)
1:17:39 – 802.1X EAP
1:18:55 – SSIDs & BSSIDs
1:19:52 – Wireless Site Surveys & WPS
1:21:01 – Antennas & Operational Modes
1:22:31 – Other Wireless Technologies (Zigbee, Satellite, Cellular - 4G/5G)
1:26:48 – Edge Networks & CDNs (part 2)
1:27:50 – Software-Defined Networking (SDN) & SD-WAN
1:31:16 – Virtual Private Cloud (VPC)
1:32:14 – Network Monitoring & Management
1:34:04 – Network Hardware Components
1:35:43 – Transmission Media (Wired & Wireless)
1:37:45 – Network Access Control (NAC)
1:40:40 – Endpoint Security (Host-based)
1:43:08 – Secure Communication Channels (VoIP & Remote Access)
1:56:42 – Network Attacks (Phases & Types like SYN Flood, DDoS, Spoofing)
2:06:18 – Network Tools & Commands (IPconfig/IFconfig, Ping, Traceroute, Nslookup, Dig)


Key topics in Domain 4 include:

Secure Network Architecture: Understanding how to design, implement, and manage secure network structures using concepts like segmentation, defense-in-depth, and the application of security controls at different OSI layers.

Network Components: Familiarity with devices such as routers, switches, firewalls, intrusion detection/prevention systems (IDS/IPS), VPNs, and wireless security solutions.

Communication Protocols: Knowing how protocols such as TCP/IP, DNS, HTTPS, and secure remote access work, and how to protect their traffic against eavesdropping, manipulation, and attacks.

Secure Communication Channels: Implementing mechanisms like TLS/SSL, IPSec, and other encryption protocols to protect data in transit from interception and unauthorized access.

Network Attacks and Countermeasures: Identifying and mitigating threats like man-in-the-middle attacks, denial of service (DoS/DDoS), ARP spoofing, and protocol-specific vulnerabilities.

The domain also emphasizes the importance of network monitoring and incident response, highlighting the need for effective detection, prevention, and remediation strategies against both internal and external threats.


📚 Explore More CISSP Resources on Our Channel:

🔹 CISSP Shorts – Key Concepts in 60 Seconds
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🔹 CISSP Practice Question Series
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