What is VPN and how can use it?

Virtual Private Network is also called VPN. VPN is a mechanism for creating a secure connection between two Networks using an insecure communication medium such as the public Internet. VPN uses public telecommunication, such as the Internet, instead of leased lines to communicate.  Through VPN, the user can connect his network to the network of any other country. And can use its network in that country. VPN is the new way of communicating.

In other meaning, VPN can extend a private network in such a way that it enables users of that network to send and receive data over the public network as if devices on the public network were directly connected to the private network. Benefits of VPNs include security, lower costs for dedicated communication lines, and greater flexibility for remote workers. VPN is also used to bypass internet censorship.

A VPN is created by establishing a virtual point-to-point connection through the use of tunneling protocols over an existing network. A VPN available from the public Internet can provide some of the benefits of a wide area network (WAN). From the user’s point of view, resources available within the private network can be accessed remotely.

VPN can be run through two medium, first through application, second through activation of Extension.

Types of VPN

There are three types of VPN’s

  1. Remote Access VPN Internet based
  2. Site-to-Site VPN or Intranet based
  3. Site-to-Site VPN or Extranet besed

Features of VPN’s

Here, there are four features of VPN.

  1. Security
  2. Services
  3. Scalability
  4. Management

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