CISSP - OSI and TCP/IP Models Explained
Watch on YouTube CISSP Domain 4 starts here: the OSI seven-layer model and TCP/IP four-layer model explained for security professionals. Covers PDU naming (bits, frames, packets, segments), device-to-layer mapping (hub, switch, router), encapsulation, and security controls at each layer including IPsec, 802.1X, TLS, and WAFs. Part of the complete CISSP study playlist.
▶ Watch next: CISSP - Network Protocols Deep Dive [4.2] https://www.youtube.com/watch?v=hLdU0NNWI2k
Chapters
- 0:00 The OSI Model -- Seven Layers Every Security Pro Must Know
- 2:12 Layers 1-3 -- Physical, Data Link, and Network
- 4:37 Layers 4-7 -- Transport Through Application
- 7:02 TCP/IP Model -- Four Layers Mapped to Reality
- 9:14 Encapsulation and PDUs -- Data Moving Down the Stack
- 11:23 Security Controls Mapped to OSI Layers
- 13:28 Exam Anchor -- OSI Attack Surface and Layer Shortcuts
- 15:26 Quiz Time
CISSP Domain 4 starts here: the OSI seven-layer model and TCP/IP four-layer model explained for security professionals. Covers PDU naming (bits, frames, packets, segments), device-to-layer mapping (hub, switch, router), encapsulation,...
Key Topics
- The OSI Model -- Seven Layers Every Security Pro Must Know
- Layers 1-3 -- Physical, Data Link, and Network
- Layers 4-7 -- Transport Through Application
- TCP/IP Model -- Four Layers Mapped to Reality
- Encapsulation and PDUs -- Data Moving Down the Stack
- Security Controls Mapped to OSI Layers
- Exam Anchor -- OSI Attack Surface and Layer Shortcuts