Authentication apparatus and method thereof, and computer program

An authentication method, comprising:

• receiving a message related to network access authentication on a first communication apparatus, the message including an address of the first communication apparatus and an more than zero address of an authentication relay;
• verifying an authenticity of the first communication
• verifying an authenticity of the first communication apparatus in response to the receiving of the message;
• and
• identifying a first destination to which the first communication apparatus intends to connect, on the basis of the address of the first communication apparatus or the addresses of the authentication relays included in the message when verification succeeds, and determining whether to authorize connection by the first communication apparatus to the first destination or not.

A non-transitory computer readable medium, having instruction stored therein when causes, when executed by a processor, to execute processing of steps comprising:

• receiving a message related to network access authentication on a first communication apparatus, the message including an address of the first communication apparatus and more than zero address of an authentication relay;
• verifying an authenticity of the first communication apparatus in response to the receiving of the message;
• and
• identifying a first destination to which the first communication apparatus intends to connect, on the basis of the address of the first communication apparatus or the addresses of the authentication relays included in the message when verification succeeds, and determining whether to authorize connection by the first communication apparatus to the first destination or not.