




Presenter Name: Abeer Farouk |
Lecture Date:11/2/2021 11:00:00 AM |
lecture Topic: PHD Thesis |
Department: Informatics |
Lecture Title: On the placement of security- related virtualized network functions over data center networks |
Lecture Summary: Middleboxes are typically hardware-accelerated appliances such as firewalls, proxies, WAN optimizers, and NATs that play an important role in service provisioning over today’s data centers. Reports show that the number of middleboxes is on par with the number of routers, and consequently represent a significant commitment from an operator’s capital and operational expenditure budgets. Over the past few years, software middleboxes known as Virtual Network Functions (VNFs) are replacing the hardware appliances to reduce cost, improve the flexibility of deployment, and allow for extending network functionality in short timescales. This lecture aims at identifying the unique characteristics of security modules implementation as VNFs in virtualized environments. We focus on the placement of the security VNFs to minimize resource usage without violating the security imposed constraints as a challenge faced by operators today who want to increase the usable capacity of their infrastructures. The work presented here, focuses on the multi-tenant environment where customized security services are provided to tenants. The services are implemented as a software module deployed as a VNF collocated with network switches to reduce overhead. Furthermore, the lecture presents a formalization for the resource-aware placement of security VNFs and provides a constraint programming solution along with examining heuristic, meta-heuristic and near-optimal/subset-sum solutions to solve larger size problems in reduced time |
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Lecture Slides: Download |
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keywords: #informatics #networks #security #middleboxes #VNF #traffic |