Ethical Hacking in 15 Hours - 2023 Edition - Learn to Hack! (Part 1)

SNMP (Simple Network Management Protocol)

  • Used for network management and monitoring.

  • Allows devices to communicate information about their status and performance.

OSI Model

  • A conceptual framework for understanding network interactions in seven layers.

  • Each layer has a specific function and communicates with adjacent layers.

Seven Layers of the OSI Model

  1. Physical Layer

    • Handles physical connection between devices (cables, switches, electrical signals).

  2. Data Link Layer

    • Responsible for node-to-node data transfer and error detection/correction (includes MAC addresses and protocols like Ethernet).

  3. Network Layer

    • Manages routing of data packets across the network using IP addresses.

  4. Transport Layer

    • Ensures complete data transfer (includes TCP and UDP protocols).

  5. Session Layer

    • Manages sessions between applications (establishes, maintains, terminates connections).

  6. Presentation Layer

    • Translates data for the application layer (handles formatting, encryption, compression).

  7. Application Layer

    • Where end-user software operates (includes protocols like HTTP, FTP, SMTP).

Importance of the OSI Model for Penetration Testing

  • Helps in identifying vulnerabilities within the specific layers of the network.

Types of Network Cables

  • Twisted Pair

  • Coaxial

  • Fiber Optic

Next Steps

  • Discussion on network cables and their specific uses in network setups.