Virtual Private Network Definition

A Virtual Private Network, or VPN, is a network that is restricted to a certain group of users, but can be used over a broad area. For example, many businesses utilize Virtual Private Networks to allow employees to connect to databases, hardware and each other.

Function

A Virtual Private Network often uses an existing public network to allow users to connect remotely. VPN users typically access the network via the Internet.

Types

There are three types of Virtual Private Networks. These are Intranet VPN, which uses a LAN connection; Extranet VPN, in which several organizations work together to create a shared LAN-based connection; and Remote Access VPN, which enlists the services of a third-party provider.

Features

When a Virtual Private Network is accessed via the Internet, Internet Protocol provides enhanced security features. This is imperative for businesses needing to protect data on a VPN.

Benefits

Using a Virtual Private Network allows a business to cut costs on leased long distance phone lines as well as the cost of maintaining a server.

Considerations

A Virtual Private Network requires understanding of network configurations, security and other networking considerations. A reliable Internet service provider is necessary, as well.

Resources

• Virtual Private Network Guide