A VPN (Virtual Private Network) provides a secure way to access the Network Resources remotely by using internet. Businesses, Government organizations and individuals can benefit from VPN by enhancing the privacy of sensitive data and thus securing it from hackers and cyber-attacks.
What is a VPN
A VPN creates a private tunnel between your device and the target resources, usually a remote intranet thus providing a security cover to your data communication from public or shared Network. A remote user, instead of connecting directly to ISP is connected to VPN server which creates an encrypted connection.
Even if you are accessing a website or making a transaction on internet, all your communication is hidden from ISP ( Internet Service Provider ). The ISP will not be able to record logs of your activity over the internet, once you are connected to VPN service provider.
VPN allows you to access the resources of a remote office the same way as you are working in a local area network by using internet as a backbone. This has led to increase not only the security but the productivity of organizations as well.
Types of VPN
Earlier Dial up connections or leased lines were used for VPN connectivity but these are now replaced by latest technologies, DSL and Fiber optics. Broadly, the VPN is classified in following two types.
This type of VPN is used in corporate world where remote employees have to access intranet of Main-office. A typical example is a sales person can fill his sales or funnel report in a centralized application while travelling across the globe or sitting at his home.
Site to site VPN
In this type of VPN connection, two or more site locations are linked together to create a virtual cohesive network. An employee in one location can access the resources of other locations and feel working in a single local area network.
VPNs have played an important role in securing the private networks from cyber-attacks. Not only organizations but individuals and home-users are accessing the internet using a VPN since apart from premium (paid) services, there are many open source (free) VPN services available today.