Internet anti-attack method and authentication server

摘要

An Internet anti-attack method includes: an authentication server receives a service access request, sent by a user, from a content delivery network node group through a WEB interface, where the service access request includes an IP address of the user. The authentication server sends an access authentication request to a security gateway, where the access authentication request includes the IP address of the user, and the access authentication request is used to instruct the security gateway to allow a service-serving request that includes the IP address of the user to be sent to the service server.