VXLAN-based method for triggering a dynamic secure channel, user side and central control board

The embodiment of the invention discloses a VXLAN-based method for triggering a dynamic secure channel, a user side and a central control board, which are used for carrying out data transmission in an established temporary channel and can avoid the security problems of internal network data leakage, tampering, attacking and the like to a great extent. The method provided by the embodiment of the invention comprises the following steps: a user side sends a first access request to a central control board, wherein the first access request is a domain name DNS resolution request for accessing a target service; the user side receives an analysis result sent by the central control board, wherein the analysis result comprises an address transferred to a website; the user side sends a second access request to the transfer-in branch according to the analysis result, access control information of the second access request comprises quintuple information, and the access control information of the second access request i