ETSI GR NFV-SEC 009解决了多层管理用例和技术方法，该问题在 安全问题声明，ETSI GS NFV-SEC 001[i.1]。多层管理寻求提供方法， 能力、程序和保证——基于需求和可用技术以及 技术——保护在虚拟化主机（“托管应用程序”）上运行的虚拟机或容器- 来自主机系统或平台的干扰（各种类型）（“主机服务”）。本文档的范围通常是包括托管服务和相关硬件的系统 （包括TPM、GPU等）、软件和配置以及托管应用程序。一些要求和措施 在这一背景之外，也会考虑，但不一定是同等的深度。

ETSI GR NFV-SEC 009 addresses multi-layer administration use cases and technical approaches, an issue identified in the Security Problem Statement, ETSI GS NFV-SEC 001 [i.1]. Multi-layer administration seeks to provide methods, capabilities, procedures and assurances - of various strengths based on requirements and available technologies and techniques - that safeguard Virtual Machines or Containers running on a virtualisation host ("hosted applications") - from interference (of various types) by the host system or platform ("hosting service").The scope of the present document is generally the system comprising the hosting service, associated hardware (including TPM, GPU, etc.), software and configuration, and the hosted application. Some requirements and measures outside this context are also considered, but not necessarily in equal depth.