| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide packet pass recording device and a method which enhance an attack resistance to an advanced attack of trying an attack by using an IP packet which generates the same hash value or the like. <P>SOLUTION: In response to a pass of a new packet, a copied packet of the packet is obtained from a packet relay device and a constant information piece is extracted, encryption is performed to the constant information piece and an encrypted value is obtained, a hash function is applied to the encrypted value and a hash value is obtained, and a pass record of the packet is held in a corresponding storage element as a storage address corresponding to the constant information piece on one-on-one basis. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
