Introduction to VPNs
A virtual private network (VPN) is a network connection that hides the content of the data transferred between the VPN client and server. Virtual private networks allow you to extend your private network to geographically dispersed locations without incurring the expense of a dedicated WAN link. The VPN takes advantage of the low-cost public Internet and allows you to connect clients and servers in a secure fashion over the public Internet.
The most compelling reason to implement a VPN is cost savings. A VPN allows you to accomplish the same things you can accomplish with dedicated links between networks or with dial-up modem solutions. The VPN solution is much more effective than either the dedicated WAN link or dial-up ...
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