| 摘要 |
PROBLEM TO BE SOLVED: To reduce a load on a network manager at the time of setting a cipher device and to eliminate an overhead at the time of starting cryptographic communication by specifying a communication group using a block diagram of the network, obtaining a communication path of a communication terminal, preparing a cryptographic communication control table and distributing it to the cipher device. SOLUTION: A cipher VPN management device 39 selects a cipher device which communicates by using a network block diagram, specifies a communication group, obtains communication path for communication terminals 35 to 38 of the specified communication group, prepares a cryptographic communication control table to be distributed to cipher device 33 and 34. Thus, the communication paths are clarified in the communication between the communication terminals 35 and 38 and operation mistakes by manually setting cryptographic communication information are made fewer. Also, when communication data from the terminals 35 to 38 are received, it is possible to eliminate an overhead at the time of starting the cryptographic communication since the cipher device 33 and 34 hold the cryptographic communication control table and there is no need to transmit a key search packet. |
