NETWORK DEVICE SETTING MANAGEMENT SYSTEM, NETWORK DEVICE SETTING MANAGEMENT METHOD, AND RECORDING MEDIUM RECORDING THEREON NETWORK DEVICE MANAGEMENT PROGRAM

A device control unit 12, in response to a user's instruction to register, registers a network device ID and setting information designated by the user into a device setting information table 31 and an alteration history table 32; reads, in response to the user's alteration instruction, setting information corresponding to the ID designated by the user out of the alteration history table 32; displays it on an input/output unit 2 to let the user alter it; updates the device setting information table 31; adds the alteration to the alteration history table 32; reads, in response to the user's instruction to have it reflected, setting information corresponding to the ID designated by the user out of the device setting information table 31; displays it on the input/output unit 2 to let the user confirm its contents; and transmits the confirmed setting information to the network device to have it reflected therein.