Abstract
Multi-Access Edge Computing (MEC), making computing resources extend to the edge continuously, plays a key role in 5G (Fifth Generation) networks. User Plane Function (UPF), as an important network function, can steer the traffic to the MEC applications and 5G core network in the integration of MEC and 5G architecture. Edge UPF (EUPF) runs in a virtual machine (VM) hosted by a virtual machine monitor (VMM) at the edge of the network. However, EUPF is likely to suffer more frequent network attacks than in the core network. The vulnerability of the virtualized environment itself also expands the attack surface for adversaries. Security protection of EUPF is urgently needed. Rejuvenation techniques play a key role in defense and service recovery. The existing researches focused on the deployment of EUPF and ignored the dependability analysis of EUPF service.
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