| 摘要 |
PROBLEM TO BE SOLVED: To facilitate securement of security when managing a network device.SOLUTION: A network system has: a network device 10; and a portable connection device 20 that is capable of connecting a terminal device 30 getting access to the network device 10 and holds preliminarily set authentication information about a connection between the network device 10 and the terminal device 30. The network device 10 has: an acquisition unit 112 that acquires the authentication information held by the portable connection device 20 in response to the connection of the portable connection device 20 to the device 10, and acquires identification information on the terminal device 30 from the terminal device 30 in response to a connection of the terminal device 30 to the portable connection device 20; and a determination unit 130 that compares the authentication information acquired by the acquisition unit 112 with identification information on the terminal device 30 and device information 122 about the device 10 to determine whether to permit access from the terminal device 30. |
