"The purpose of a VPN is to connect a remote computer to the main computer on the company's network. The VPN acts as a tunnel and masks the computer's IP address, providing secure access to the main computer so they can communicate securely. The main computer then provides access to other company resources to the remote computer. A VPN bridge connects a remote computer directly to the office network with the use of the internet. The remote computer appears as though it is directly connected to the main company network and has access to all the other nodes, resources, and files across the network that it is authorized for. A VPN bridge is more expensive and reduces the network bandwidth but can be more useful in certain circumstances."