| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To avoid the trouble due to the interruption of an internet line in a network system using an internet VPN to improve the reliability of the network. <P>SOLUTION: In the network system 8 using an internet VPN where a server 2 and at least one computer 3A, 3B- are connected to ADSL lines 6A, 6B, 6C- through fire walls 4, 5A, 5B-, respectively, so that the server 2 and the computers 3A, 3B-, are communicably connected over the ADSL lines 6A, 6B, 6C- by the internet VPN 7, another different ADSL line 9A is added to the ADSL line 6A connected to the server 2 to make the line duplex, a router 10 is inserted between the duplex ADSL lines 6A, 9A and the server 2, and a fire wall 11 is provided between the router 10 and the different ADSL line 9A. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
