Patent ID: 8966609
Filing Date: 2015-02-24
Classification: H04L

Abstract:
1. An authentication apparatus for detecting and preventing a source address spoofing packet, the apparatus comprising: a packet reception unit configured to receive a packet from a previous node or a user host; a self-assurance type identification (ID) generation unit configured to generate a self-assurance type ID of a source node of the received packet by: generating a digital signature value Sign generating a result of hashing the digital signature value Sign when a length of the self-assurance type ID is not equal to a length of a hash function: a self-assurance type ID verification unit configured to determine whether the source address of the received packet has been spoofed by using the self-assurance type ID; a white list storage unit configured to store an identification of a reliable source node based on the result of determination of the source address spoofing; a black list storage unit configured to store an identification of an unreliable source node based on the result of determination of the source address spoofing; and a packet transmission unit configured to transmit the packet whose source has been verified through the self-assurance type ID verification unit to a next network node.