Server apparatus, client apparatus and method for communication based on network address mutation

A server apparatus, comprising:

• one or more processors;
• and
• executable memory for storing at least one program executed by the one or more processors,
• wherein the at least one program is configured to set an external address of a network interface for receiving a packet from a client apparatus, to set an internal address of a hidden interface in order to forward the packet received through the network interface to the hidden interface, to modify the external address based on a preset network address mutation rule, and to forward a packet received from the client apparatus through the modified external address to the hidden interface, thereby communicating with the client apparatus.

A client apparatus, comprising:

• one or more processors;
• and
• executable memory for storing at least one program executed by the one or more processors,
• wherein the at least one program is configured to set an external address of a network interface of a server apparatus in order to transmit a packet to the server apparatus, to set the external address modified based on a preset address mutation rule as a destination address, and to transmit a packet to the external address of the server apparatus, thereby communicating with the server apparatus.