Provided is a communication method of a universal plug and play (UPnP) remote access server (RAS), the communication method including: accepting a plurality of remote access connections from UPnP devices of a plurality of remote networks; collecting device list information about devices discovered in...http://www.google.ca/patents/US8190726?utm_source=gb-gplus-sharePatent US8190726 - UPnP remote access server and method of supporting multiple remote accesses
