Atm network with a filtering table for securing communication

Abstract From the Canadian patent

In a communication system, a source node responds to a packet by transmitting a signaling message to an ATM network containing source and, destination network-layer addresses and source and destination transport-layer addresses of the packet. The ATM network includes a filtering table having a plurality of entries each storing source and destination network-layer addresses and source and destination transport-layer addresses. Upon receipt of the signaling message, the ATM network returns a grant indication message to the source node if contents of the received signaling message are identical to contents of one of the entries of the filtering table and establishes a virtual connection …