| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to recognize a substituted certification device and to prevent an illegal access by providing a terminal equipment with a communication processing part and a certification information monitoring part for monitoring interface with a session certification device and controlling a session based on the monitored result. SOLUTION: A terminal 11 is provided with a communication processing part 19 for acquiring certification information and executing a session with a host 13 and a certification information monitoring part 17 for always monitoring interface with a certification device 15 and checking the validity of the certification information. The monitoring part 17 periodically or occasionally accesses the device 15 to check the validity of certification information. At the time of recognizing illegal certification information due to the substitution of the device 15 or the like, the monitoring part 17 provides the information to the processing part 19. The processing part 19 acquires the illegal certification information and sends the information to the host 13, which recognizes the illegal certification information and stops the session between the terminal 11 and the host 13. |
