Method, terminal, and server for providing communication service

A terminal, comprising:

• a communication unit configured to:
• transmit, to a server, a first message requesting for mapping a virtual address and a first Internet Protocol (IP) address, and
• receive an IP packet including a first IP address from the server through a first communication network;
• and
• a control unit configured to convert the first IP address to the virtual address mapped to the first IP address in the IP packet.

A communication service method of a server, the method comprising:

• receiving, from a terminal, a first message requesting for mapping a virtual address and a first Internet Protocol (IP) address;
• receiving, from the terminal, an IP packet including a first IP address through a first communication network;
• controlling mapping the virtual address and the first IP address in response to the request message;
• and
• converting the first IP address to the virtual address mapped to the first IP address in the IP packet.

A server, comprising:

• a communication unit configured to:
• receive, from a terminal, a first message requesting for mapping a virtual address and a first Internet Protocol (IP) address from a terminal, and
• receive, from the terminal, an IP packet including a first IP address from the terminal through a first communication network;
• and
• a control unit configured to:
• control mapping the virtual address and the first IP address in response to the request message, and
• convert the first IP address to the virtual address mapped to the first IP address in the IP packet.