A guidebook regarding how VPN works


The world has changed in a major kind of way and the way that business is being carried out has changed a great deal over the past decade.  The multinational companies have shed their regional garb and are dealing with an international public. Many companies have their branches spread not only all over the country but are spread all over the world. Obviously a mode of doing business has to be discovered which easies the procedure of connection to all the employees all over the globe. Necessarily all companies need a way to maintain speedy, safe and reliable communication with all the employees.  Till very recently, there was only one option to make network connections with the head office computers easy and fast which was that of leased lines so as to maintain a WAN or A Wide Area Network. A WAN or a Wide Area Network definitely has a lot of advantages over the public network like the internet in terms of security, dependability and performance.   Yet it needs to be mentioned that maintaining a WAN is very expensive when using leased lines. There is a hike in costs depending upon the distance of the branches of the same office.  The leased lines are not all a profitable solution when it comes to the highly mobile marketing staff of a particular company as because they are constantly on the move and needed to connect to the company network on more than one occasions.


A well designed Virtual Private Network can help business a great deal. Actually, the VPN can help in the way of increasing the reach of connectivity to a wider area of landmass. There is a significant reduction in the operational costs when compared to the more expensive WANs. The productivity of the company is increased to a significant level because the remote employees can now opt for the work from home option.  The VPN provides networking opportunities across the globe. Moreover, the VPN presents faster Return On Investment than the more traditional WAN.  The features of a VPN are that of safety, consistency, scalability, network management and policy management.


In today’s context the network managers are under constant strain to find out ways and means to connect the people spaced out over a wide area of landmass. It is a challenging task to link up the employees on the network connection. Some of the technologies which make VPN are tunneling, encryption, QoS and comprehensive security.  There are three types of virtual private networks divided according to the way how business and organizations use VPNs. They are access VPNs which provide remote connectivity to telecommuters and users of cell phones.  A very little cost is demanded from the subscribers of this type of connection. Intranet VPNs establish a connection between the corporate head offices, branch offices spread out all over the country and the globe and remote offices. In this case, the VPN is an apt substitute to a leased line. Extranet VPNs is an option to fax, snail mail and is a good choice for e commerce.

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