| 摘要 |
When it is judged that the IP address of a PC for the administrator is not included in IP addresses received from the PC for the administrator under accessing while a PC whose access is to be authorized is registered (NO in S20), the IP address of the PC for the administrator is registered besides IP addresses received for identifying PCs (S21). Meanwhile, when it is judged that the IP address of a PC for the administrator is included in IP addresses received from the PC for the administrator under accessing while a PC whose access is to be rejected is registered (YES in S43), the IP addresses received for identifying PCs are registered after excluding the IP address of the PC for the administrator therefrom (S21). This makes it possible to avoid a situation that an access from the terminal device for the administrator to a network device becomes impossible.
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