VPN or Virtual Private Network is a technology that connects two individual private networks to a public network, using the internet as a medium. The process of setting up a Virtual Private Network is called Virtual Private Networking. Setting up a VPN can be done for various purposes such as for Remote Access over the Internet, Connecting Networks over the Internet and Connecting Computers over an Intranet. The aim of VPN is to provide the same services as that received through expensive leased lines, but at a lower cost.
Here is a look at the step involved in setting up a VPN in your home computer. Select 'Control Panel' from the 'Start' menu. Here you need to select "Network and Internet Settings" and from here select 'Network Connections' in XP or the Network and Sharing Center in Vista. Proceed to complete the steps here by selecting 'Create a New Connection'. Next follow the upcoming steps till you complete the 'Allow Virtual Private Connections' step. Select the check box for each user that you want to give access over the VPN. This process completes the VPN setup. You can see new incoming connections at this point.
You need to visit a VPN service provider's website. Register online in the site and download the software to any system in the office network. This downloaded software establishes connection between the office networks with the VPN service through the internet without any need to change in the firewall. By leaving the firewall unchanged, the network is highly secured from the hackers. You can add users to the service once the office network is connected. The users can setup their computers for VPN access. There are advanced VPN service available, which allows the remote user to work immediately after registration. VPN service helps in limited hardware procurement and employing consultants to setup thus providing freedom to add or remove users at owner's requirement.