5G Network Slice Isolation

TL;DR

This paper discusses security challenges in 5G network slicing, emphasizing the importance of slice isolation and proposing a framework to optimize isolation policies balancing security, performance, and cost.

Contribution

It introduces a generic framework for optimizing network slice isolation policies in multi-slice 5G networks, addressing security and performance trade-offs.

Findings

Identifies key security concerns in multi-network slicing

Proposes a framework for optimizing slice isolation policies

Highlights the importance of appropriate isolation point selection

Abstract

This article reveals an adequate comprehension of basic defense, security challenges, 2 and attack vectors in deploying multi-network slicing. Network slicing is a revolutionary concept 3 of providing mobile network on-demand and expanding mobile networking business and services 4 to a new era. The new business paradigm and service opportunities are encouraging vertical 5 industries to join and develop their own mobile network capabilities for enhanced performances 6 that are coherent with their applications. However, a number of security concerns are also raised 7 in this new era. In this article, we focus on the deployment of multi-network slicing with multi8 tenancy. We identify the security concerns, and discuss about the defense approaches such as 9 network slice isolation and insulation in a multi-layer network slicing security model. Also, we 10 identify the importance to appropriately select the network slice isolation points, and propose 11 a generic framework to optimize the isolation policy regarding the implementation cost while 12 guaranteeing the security and performance requirements.