Chapter 7. Remote Access and VPNs
Remote access is an important element in enterprise network management. As more employees telecommute, and access to mission-critical services is required 24x7, VPNs are considered an integral part of a network infrastructure.
A VPN is generally defined as a network that uses the public Internet to transfer traffic in a secure manner, using various encryption protocols. That definition is somewhat limiting as a VPN can be run over private lines, wireless networks, and phone lines as well. A broader definition of VPN is the joining of two or more networks—or parts of networks—in different locations, to form a single network. This definition is more inclusive of the types of technologies that may constitute a ...
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