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CCNA® Cisco Certified Network Associate: Study Guide, Seventh Edition by Todd Lammle

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Virtual Private Networks

I’d be pretty willing to bet you’ve heard the term VPN more than once before. Maybe you even know what one is, but just in case, a virtual private network (VPN) allows the creation of private networks across the Internet, enabling privacy and tunneling of non-TCP/IP protocols. VPNs are used daily to give remote users and disjointed networks connectivity over a public medium like the Internet instead of using more expensive permanent means.

Types of VPNs are named based upon the role they play in a business. There are three different categories of VPNs:

Remote access VPNs Remote access VPNs allow remote users such as telecommuters to securely access the corporate network wherever and whenever they need to.

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