Special Edition Using TCP/IP, Second Edition

Virtual Private Networks

The exponential growth of the Internet has led to many changes in the way organizations do business. Organizations have launched their corporate and trading centers at different locations on the globe to expand their businesses. Organizations need to analyze the requisite cost of enabling a secure and effective communication mechanism. To establish such a communication mechanism, organizations implement a virtual private network (VPN). The concept of connecting two private networks through a public medium of communication is called virtual private networking. The public medium of communication that is referred to in this context can be the Internet or any public network.

A VPN helps an organization to reduce networking ...