After that, the security in SNMPvS is discussed including privacy &authentication mechanism and time-window detection. The emphasis is put on USM (User-based Security Model) and VACM (View-based Access Control Model).

• 在此基础上，讨论了SNMPv3的安全性，包括加密鉴别机制以及合时性检测，重点介绍了基于用户的安全模型和基于视图的访问控制。