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CCDP Self-Study: Designing Cisco Network Architectures (ARCH) by Amir Ranjbar, Keith Hutton

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Chapter 9. Designing Virtual Private Networks

After completing this chapter, you will be able to

  • Identify Virtual Private Network (VPN) technologies

  • Design site-to-site VPNs

  • Design remote-access VPNs

Virtual private networks (VPNs) are networks deployed on a public or private network infrastructure. VPNs are useful for telecommuters, mobile users, and remote offices as well as for customers, suppliers, and partners.

For enterprises, VPNs are an alternative wide-area network (WAN) infrastructure, replacing or augmenting existing private networks that use dedicated WANs based on leased-line, Frame Relay, Asynchronous Transfer Mode (ATM), or other technologies. Increasingly, enterprises are turning to their service providers for VPNs and other complete ...

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