| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a communication control device, communication control system, and communication control program that allow a user to perform encryption communication at an optimal speed. <P>SOLUTION: A communication control device 100 is a device for controlling encryption communication between an external network I and an internal network N, comprising: means 11 for accepting an access confirmation request of the external network I from a relay device 200 connected to the internal network N; means 13 for analyzing an access request received from the external network I; and means 14 for answering a determined communication mode to the relay device 200 by determining, based on analyzed results, that the communication mode when the external network I and the internal network N are connected should be a communication mode corresponding to communication speed which can be used by an information terminal 400 having transmitted the access request from the external network I. The communication control device 100 is characterized by performing encryption communication between the external network I and the internal network N via a tunnel on a network formed according to the determined communication mode. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
