OSI Model
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What is OSI Model?
The OSI (Open Systems Interconnection) model is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven distinct layers. Each layer performs a specific set of network functions, and communicates with the layers above and below it. This model provides a structured way to understand how information travels from one application to another over a network.
Free resources to learn OSI Model
- ArticleWhat is OSI Model? - AWS
- VideoWhat is OSI Model?
More in stage 4: Security Skills and Knowledge
- Security Skills and Knowledge
- Understand Common Hacking Tools
- Core Concepts of Zero Trust
- Understand Common Exploit Frameworks
- Roles of Compliance and Auditors
- Blue / Red / Purple Teams
- Understand Concept of Defense in Depth
- Understand the Definition of Risk
- False Negative / False Positive
- Understand Concept of Runbooks
- Understand Backups and Resiliency
- True Negative / True Positive
- Understand Basics of Forensics
- Cyber Kill Chain
- Basics of Threat Intel, OSINT
- Basics and Concepts of Threat Hunting
- MFA & 2FA
- Honeypots
- Understand Handshakes
- Basics of Vulnerability Management
- Operating System Hardening
- Understand CIA Triad
- Basics of Reverse Engineering
- Understand Concept of Isolation
- Privilege Escalation
- Penetration Testing Rules of Engagement
- Basics of IDS and IPS
- Web Based Attacks and OWASP10
- Perimiter vs DMZ vs Segmentation
- Authentication vs Authorization
- Learn how Malware works and Types
- Star
- Ring
- Mesh
- Bus
- Common Protocols and their Uses
- Common Ports and their Uses
- SSL and TLS Basics
- Basics of NAS and SAN
- Kerberos
- RADIUS
- LDAP
- SSO
- Certificates
- Local Auth
- SSH
- RDP
- FTP
- SFTP
- HTTP / HTTPS
- SSL / TLS
OSI Model: common questions
Can I learn OSI Model in Hindi?
This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain OSI Model in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.
Is this OSI Model tutorial for beginners?
It is lesson 130 of 301 in the free Cyber Security roadmap, in stage 4, Security Skills and Knowledge. If you are new to Cyber Security, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.