| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To suppress packet loss before a cipher tunnel is completed for a network repeating device, a network system, and a cipher communication method that enable cipher communication through a cipher tunnel. <P>SOLUTION: In timing T1 where an ISAKMP packet D1 is received from a user device 10, only Phase-II SA (SA for reception) for cipher cancellation for ciphered data sent from the user device 10 is set, and in timing T2 where an ISAKMP packet D3 representing authentication is received from the user device 10, Phase-II SA (SA for transmission) for deciphering data to be sent to the user device 10 is set. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
