Method and system for device management, and server

A device management method performed in a device management system that includes a first server and a second server, the device management method comprising:

• receiving an operation request for acquiring specific information about a designated device in the first server;
• transferring the operation request to the second server in the first server;
• authenticating a device in a local network in response to an authentication request from the device in the second server;
• maintaining communication connection with the device that the authentication is successful in the second server;
• receiving the operation request transferred from the first server in the second server;
• and
• executing, in the second server, a content of the operation request by carrying out communications in real time with the designated device that is in communication connection with the second server when the operation request is received.

A server comprising:

• an authentication unit configured to authenticate a device in a local network in response to an authentication request from the device;
• a connection maintaining unit configured to maintain communication connection with the device that the authentication is successful;
• a receiving unit configured to receive the operation request transferred from another server that receives an operation request for acquiring specific information about a designated device;
• and
• an executing unit configured to execute a content of the operation request by carrying out communications in real time with the designated device that is in communication connection with the server when the operation request is received.