Computer Networking: Virtual Private
Networks: An Introduction, Benefits & Others
4. Virtual Private Networks: An
1. What is a Virtual Private Network (VPN)?
A VPN is a network that is constructed by using public
Internet (or any other public media) to connect systems
(also called as nodes) for transporting data. These systems
normally use encryption and other security mechanisms to
ensure that only authorized users can access the vpn network
and that the data cannot be intercepted.
2. How a Virtual Private Network (VPN) differs from an ordinary
i. VPN typically uses Internet and allow only valid remote
user to access the Corporate network whereas an ordinary
Internet connection can only be used to access public services
such as web service and email service.
ii. A VPN secures the data through encryption as the
data is transported over the public Internet. An ordinary
Internet access normally doesn't involve any encryption.
iii. The central office typically requires a Remote Access
Server (RAS) to login to the Corporate network.
3. How a Virtual Private Network (VPN) differs from an Intranet
using leased line connection?