| 摘要 |
<p>The embodiments of the present invention disclose a method, a system and a device for establishing communication. The communication establishing method is used for establishing communication between at least two communication parties which include the first communication party and the second communication party. The method involves sending a cryptographically generated address CGA request to said first communication party; receiving a CGA parameter and a CGA signature that are returned by the first communication party; verifying the CGA parameter and the CGA signature and after a successful verification, establishing communication with the first communication party. Based on the embodiments of the present invention, during the communication establishing procedure, the communication party confirms the reality of the CGA by verifying the CGA parameter and the CGA signature included in the CGA extension head, effectively prevents IP address cheating and prevents or lightens network security problems caused by IP address cheating.</p> |
