| 摘要 |
<p>PROBLEM TO BE SOLVED: To operate physically one server as if each closed area network had a server in the communication between a plurality of the closed area networks and a server side network. SOLUTION: In this communication method, when an access server AS has a point-to-point protocol PPP connection request from a terminal in a closed area network to a server, which PPP line in which closed area network is identified, a corresponding line is selected in an address space (Figure B) at a server side assigned in advance by PPP lines of closed area networks, an address of a terminal of the closed area network is made to correspond to the selected line (Figure A), address conversion is applied to a packet and the packet is sent to the server side network. The packet from the server side network is address converted by referring to the Figure A, which PPP line in which closed area network is recognized and the packet is sent to the line.</p> |
