CISSP Domain 4: Communication & Network Security Explained 2025

In this episode, we dive deep into CISSP Domain 4: Communication and Network Security, covering essential concepts to help you ace the CISSP exam. Learn about: CISSP Domain 4: Communication & Network Security mm:ss 00:00 - Introduction to CISSP Domain 4: Communication & Network Security 00:30 - Understanding the OSI Model 01:28 - Layer 1: Physical Layer (Cables, Wi-Fi, and Binary Transmission) 03:58 - Network Topologies & Protocols (Bus, Star, Mesh, CSMA/CD) 04:54 - Layer 2: Data Link Layer (MAC Addresses, Switches, ARP) 07:25 - Layer 3: Network Layer (IP Addresses, Routing, IPv4 & IPv6) 12:20 - Layer 4: Transport Layer (TCP vs. UDP Explained) 16:17 - Layer 5: Session Layer Overview 17:45 - Layer 6: Presentation Layer (Data Formatting & Encryption) 18:42 - Layer 7: Application Layer & Common Protocols 20:39 - Defense in Depth: Securing Networks 22:05 - Network Segmentation & DMZs 23:32 - Types of Firewalls Explained 26:18 - Intrusion Detection Systems (IDS) & Intrusion Prevention Systems (IPS) 27:43 - Honeypots & Their Role in Security 28:40 - The Importance of User Security Training (The Human Factor) 29:39 - Secure Remote Access & VPNs (Virtual Private Networks) 31:55 - VPN Protocols (IPSec, SSL/TLS) 33:54 - Remote Authentication Protocols (RADIUS, TACACS+) 35:20 - SNMP & Secure Network Management 36:46 - Stages of Network Attacks (Reconnaissance & Enumeration) 40:04 - Common Network Attacks (Eavesdropping, SYN Floods, DDoS, IP Spoofing) 44:46 - Man-in-the-Middle (MitM) Attacks & ARP Poisoning 46:11 - Defending Against Network Attacks (Encryption, Certificates) 48:30 - Virtualization for Security (VLANs & SDN) 51:17 - Key Takeaways & Future Security Challenges (IoT, Awareness, and Preparedness) ✅ Networking protocols (WAN, wireless, IP addressing) ✅ Network defense strategies (firewalls, IDS/IPS, honeypots) ✅ Remote access security (VPNs, authentication protocols) ✅ OSI Model deep dive and network attacks ✅ Zero Trust, network segmentation, and security best practices With insights from four expert sources, this episode provides a comprehensive guide to strengthening your network security knowledge. Whether you're a CISSP aspirant or a cybersecurity professional, this discussion is packed with valuable information. 🔔 Subscribe for more CISSP insights and cybersecurity discussions! 💬 Comment your biggest CISSP networking challenge! #CISSP2025 #cissp #CyberSecurity #NetworkSecurity #CISSPExam #Infosec #EthicalHacking #ITSecurity #OSImodel #VPN #Firewalls #ZeroTrust ⚠️ Disclaimer: This podcast is intended for educational and informational purposes only. Every episode is powered by our original research and creative insights. We use a variety of research tools, including AI-assisted platforms to explore current topics and present them in a way that's clear, concise, and engaging. While we make every effort to fact-check and stay accurate, we encourage you to do your own research and verify key details with official or trusted sources before making any decisions based on what you hear. Our goal is to ensure a unique, engaging, and valuable experience for our listeners. ⚠️ **Note**: This content is not endorsed by (ISC)². Always cross-reference official materials.