| 摘要 |
<p>This invention is directed to reduction of victims of spoofing on the network. There are included a host server (10) and at least one client terminal (20) that is connected to the host server via a communication line (1) and that receives a service from the host server. Data, which is embedded in data transmitted from the client terminal and related to an access start date and time, is extracted from the data transmitted from the client terminal and then converted to a directly readable access start date and time, which is then compared with a real time, thereby determining the correctness of the access.</p> |
