(EN)
The invention provides a method, a device and a system for network authentication and a server. The method of the invention comprises the following steps: receiving a user authentication request forwarded by a first access management functional entity when the user attaches onto a second access management functional entity from the first access management functional entity; acquiring an authenticated key of a security domain of the second access management functional entity according to the user authentication request; and authenticating user according to the authenticated key. The method solves the problem of the prior art that the intra-domain and inter-domain switching of the user is time-consuming and insecure so as to cause user service packet loss or even temporary service interruption, realizes the secure authentication of the user during intra-domain or inter-domain movement and improves the security and reliability of the user authentication.
(ZH) 本发明提供了一种网络认证的方法、装置、系统及服务器。本发明所述方法包括：当用户从第一接入管理功能实体附着到第二接入管理功能实体时，接收来自所述第一接入管理功能实体转发的用户认证请求；根据所述用户认证请求，获得所述第二接入管理功能实体的安全域的认证密钥；根据所述认证密钥，对用户进行认证。解决了现有技术中用户在域内和域间切换时，耗时长，且安全性差，导致用户业务的丢包甚至暂时中断业务的问题，实现了用户在域内或者域间移动的安全的认证，提高了用户认证的安全性、可靠性。
