Protective device for internal resource protection in network and method for operating the same

A method for protecting internal resources in a network, comprising:

• determining whether an access request for accessing an external network from an internal user of an internal network is permitted or not;
• connecting to a server located in the external network if the access request is permitted;
• receiving a service command from the internal user;
• if the received service command is a command designating a type of data, storing the designated type of data;
• and
• if the received service command is a command requesting data transmission, transmitting data from the internal user and recording the transmission and reception of services.

A method for protecting internal resources in a network, comprising:

• giving an internal user of a local network in which a firewall is built a proper ID and host information;
• performing authentication and access control upon receiving a request for access to an external network from the internal user;
• connecting to a server of the external network if an access to the external network is permitted;
• and
• receiving a service command from the internal user, and if the service command is a request for data transmission, transmitting file data transmitted from the internal user to the server and storing copies of the transmitted file data and log information in a database.