1. A system for communication, comprising: a network abstraction layer (NAL) built on a public Internet, the NAL comprising an overlay network allowing a direct Internet Protocol (IP) communication between endpoints in a virtual private network (VPN) over the Internet, wherein the NAL provides the overlay network between the endpoints, the overlay network being built over the Internet; and a network virtualization layer (NVL) built on the NAL, the NVL comprising a VPN aggregator using a group key management encryption protocol providing synchronization of session keys to encrypt a payload between all the endpoints over the NAL such that encrypted traffic is able to be decrypted by any endpoint for an entire session to allow instantly available communication between all the endpoints, wherein the communication between all the endpoints does not require using a hub after an initial connection is established, and wherein the VPN aggregator enables aggregation of multiple encryption domains using virtualization techniques; wherein an IP communication defines data being exchanged between the endpoints via tunnel interfaces, wherein a tunnel interface defines an interface on an endpoint that is one side of a point-to-point or point-to-multipoint link with another endpoint; and wherein IP tunnel addresses define all IP addresses of the tunnel interfaces of an endpoint, wherein translation of the IP tunnel addresses and all LAN IP subnets of the endpoint interact IP address occurs for each endpoint, and wherein a registration process the IP addressing scheme of the each endpoint is recorded, said IP addressing scheme including public IP addresses and the IP tunnel addresses of the each endpoint and all LAN IP subnets of the each endpoint.