A hub-and-spoke VPN topology is a type of VPN topology where all the remote offices communicate with the corporate office, but communication between the remote offices is denied. The corporate office acts as the hub, and the remote offices act as the spokes. This topology reduces the number of VPN tunnels required and simplifies the management of VPN policies. A point-to-point VPN topology is a type of VPN topology where two endpoints establish a direct VPN connection. A star topology is a type of VPN topology where one endpoint acts as the central node and connects to multiple other endpoints. A full-mesh VPN topology is a type of VPN topology where every endpoint connects to every other endpoint.