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Chapter 10 Virtual Private Networks

Learn about different types of Virtual Private Networks (VPN) such as IPsec, GRE, L2TP, SSL, and SSH, and how Intranet VPNs link private networks within an organization while Extranet VPNs connect multiple private networks across different organizations.

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Chapter 10 Virtual Private Networks

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  1. Chapter 10 Virtual Private Networks

  2. VPN Defined • A segment of the public network made to appear part of a private network so that it can be used to carry private traffic securely • Constructed by connecting two or more private networks using a tunnel

  3. Types of VPNs • May be encrypted (IPsec) or nonencrypted (GRE) • May be formed using Frame Relay or ATM • Network layer VPNs include IPsec, GRE, and L2TP • Application layer VPNs include SSL and SSH • Intranet VPNs connect two or more private networks within the same organization • Extranet VPNs connect private networks belonging to more than one organization

  4. Types of VPNs based on OSI Model Layers

  5. Intranet and Extranet VPNs

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