NFV中的网络服务异常：调查、分类和验证方法
Network Services Anomalies in NFV: Survey, Taxonomy, and Verification Methods
摘要：
网络功能虚拟化（Network Function Virtualization，NFV）已经成为一种颠覆性的网络架构，其飞速发展促使企业将网络功能外包到云，并最终收获云计算的成果，包括弹性、即用即付计费模式和按需服务提供。然而，许多不情愿的企业反对这种外包的好处，因为他们对安全、信任和合规性的关注至关重要。后者预计可能会因云提供商的不诚实行为、共存竞争对手的攻击、云管理员的错误配置或NFV开发人员的实现缺陷而违反安全和QoS策略。因此，将敏感工作负载迁移到云需要企业首先通过了解可能的网络服务异常来评估风险，其次通过设计有效的机制来检测此类异常来建立对云的信任。该调查提供了对NFV环境中可能发生的网络服务异常的详细审查。我们首先提出了一个分类的网络服务异常，并分析其负面影响的关键服务属性，包括安全性和性能。其次，我们从文献中比较和分类现有的异常的验证机制。最后，我们指出了文献的差距，并确定未来的研究方向，在NFV异常验证。
英文摘要：
Network Function Virtualization (NFV) has emerged as a disruptive networking architecture whose galloping evolution is prompting enterprises to outsource network functions to the cloud and ultimately harvest the fruits of cloud computing, including elasticity, pay-as-you-go billing model, and on-demand services provisioning. However, many reluctant enterprises oppose the benefits of this outsourcing to their critical and pressing concerns about security, trust, and compliance. The latter anticipate possible security and QoS policy violations stemming from dishonest behaviors by cloud providers, attacks by co-resident competitors, misconfiguration by cloud administrators, or implementations flaws by NFV developers. As a result, migrating sensitive workloads to the cloud requires enterprises to first assess risks by gaining knowledge of possible network services' anomalies and second, to build trust in the cloud by designing effective mechanisms to detect such anomalies. This survey provides scrutiny of network services anomalies that may occur in the NFV environments. We first present a taxonomy of network service anomalies and analyze their negative impacts on critical service attributes, including security and performance. Second, we compare and classify the existing anomalies' verification mechanisms from the literature. Finally, we point out the literature gap and identify future research directions for anomalies verification in NFV.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
