| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem of a prior art in which, if communication of a communication device is restricted, the device itself needs restriction-related setting.SOLUTION: A communication system according to the invention comprises: a network device communicatively connected with a restriction object terminal; and a server communicatively connected with the network device. The server holds communication restriction information defining restriction of Internet connection for the terminal from a remote terminal in an updatable manner. The network device or the server performs restriction of Internet connection for the terminal on the basis of an IP address output to the network device from the terminal during communication and the communication restriction information. |
