-
Full OSI Model - 7 Layers
- Application
- Presentation
- Session
- Transport
- Network
- Data Link
- Physical
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Simplified OSI model
| Layer | Protocols | Concepts | Where the code is |
|---|---|---|---|
| Application | HTTP, SSH | Urls, passwords | Flask, Apache, etc |
| Transport | TCP, UDP | Port Numbers, Sessions | OS kernel, system libraries |
| Internet | IP | IP addresses, routes | OS kernel, routers |
| Hardware | Wifi, Ethernet, DSL | Signal Strength, Access Points | Device Drivers |