| 摘要 |
User access to an information network, such as the Internet, is controlled so that predetermined access is prevented in such a manner that the control is not easily circumvented. A user interacts with the network via a respective PC terminal (1) which is physically separated from but operatively connectible to a virtual PC (3) included in a PC server (2). The network accessing software (browser) 4 is provided at the virtual PC (3). A control gateway (6) disposed in the communication path between the virtual PC (3) and the network is controlled in order to prevent predetermined access to the network. A supervisor of the user is able to set the prevented access via a respective terminal (7) upon provision of predetermined credentials, passwords etc. |
