A Virtual Private Networks would signify a network inside another network. For businesses whose employees work remote, this technology is often utilized. So in essence, we are looking at the network provided by the World Wide Web used in a new and creative way. The corporate systems needed by employees who work remotely is accessed through the main housing provided by the Internet.
Corporate environments have a far greater need for tight security. This is achieved by creating a VPN (virtual private network) on top of the normal internet connection. As a result, security and encryption is further tightened. This way, nobody can intercept the data being transmitted from one point to another, and only a select few users with authentication can get into the corporate network.
So as you can see, the VPN (virtual private network) is a private network inside a public one, being the one created through the Internet.
Two components are needed to make this scenario work. First, there needs to be a corporate server setup which has the server VPN software installed (and a good router with a firewall). The second ingredient would be client VPN software installed on the computers of the remote employees. Once the client machine is on the internet, they would use the VPN client software to communicate to the corporate server VPN where authentication occurs. Access would then be granted after the server is able to successfully identify the connecting client as a valid user. In essence, this is the recipe for a hard outer shell of protection and encryption, and after access has been granted, information can pass to and from the virtual private network freely and safely.
Finally, there can be a cost savings if determining whether a leased line or VPN is for you. Leased lines can increase in price based on the geographic distance between sites. A virtual private network does not and in fact is more scaleable.
VPN is definitely a viable option for businesses small and large that have remote employees, need site-to-site access with remote offices or secure dial-up connections.
This article is just a very general overview. This is not to be mistaken as expert advice – rather, it is an article written to help you get a jump on your research on this topic and help you learn the basics. It is recommended that you ask yourself first what kind implementation would work best for your business – it may be site-to-site, remote or secure dial-up. Other interesting topics worth reading include, but are not limited to firewalls, encryption, security, different types of servers and Internet protocol security protocol, or IPSEC.
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