Virtual Private Network (VPN)

I want to explain about VPN because some of my friends are confusing about VPN.

VPN is used to get secured network connection through Internet. The big companies also use VPN to get secured network connection in connecting offices, industries, etc., from different locations through the Internet. (for example, most of the banks use VPN).

Generally, there are two types of VPN.(More than two if detailed)

1. Side-to-Side VPN.

2. Remote Access VPN.