Virtual Private Network is a network within a network. This is very popular with businesses that have people working remotely. Basically what we have here is a utilization of the network already provided by the internet. The internet infrastructure can be used as the network for remote employees to access their corporate systems.
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. This type of connection allows for greater security and encryption.
Only authenticated users can access the corporate network and the data being transferred cannot be intercepted.
So this VPN (virtual private network) connection is being run through the internet public network.
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 next would be to have the client VPN software installed on the remote employees machines. Once the client machine is on the internet, they would use the VPN client software to communicate to the...