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CCNA Quick Reference Sheets (CCNA Exam 640-802) by Jim Doherty, Eric Rivard

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Chapter 11. Introducing VPN Solutions

What Is a VPN?

Virtual Private Networks (VPN) provide an Internet-based WAN infrastructure of connecting branch offices, home offices, and telecommuters to the network. In other words, VPNs allow office locations and remote users to interconnect with each other, securely through the Internet. After they are connected through the secure VPN connection, the interconnected networks become part of the network as if they were connected through a leased line such as a classic WAN link.

Benefits of VPNs

VPNs provide the following benefits:

  • Cost savings: VPNs enable organizations to use the Internet to interconnect offices.

  • Security: VPNs use advanced encryption and authentication protocols to protect data from unauthorized ...

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