A network control apparatus and method is provided. The method includes operations of informing a server of capability information including an encryption/decryption method, wherein the server provides the network control apparatus with control information used to control a network device using a general-purpose control web application, transmitting to the server a control information requesting message that requests the control information, receiving from the server the control information which has been encrypted using the encryption/decryption method, decrypting the encrypted control information according to the encryption/decryption method, and transmitting a control command for controlling the network device according to the decrypted control information.