Patent 8011004 was granted and assigned to Electronics and Telecommunications Research Institute on August, 2011 by the United States Patent and Trademark Office.
Provided is an apparatus and method for virtual private network (VPN) communication in a socket level that can be applied in an Internet Protocol version 4(IPv4)/IPv6 complex network, and can process data in a socket level to make a VPN communication apparatus available in many applications requiring more security, as well as a web application, wherein the data is transmitted to and received from any one of the internal device and the external device.