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SplitBox: Toward Efficient Private Network Function Virtualization

Asghar, H; Melis, L; Soldani, C; De Cristofaro, E; Kaafar, MA; Mathy, L; (2016) SplitBox: Toward Efficient Private Network Function Virtualization. In: Han, D and Raz, D, (eds.) HotMIddlebox '16: Proceedings of the 2016 workshop on Hot topics in Middleboxes and Network Function Virtualization. (pp. pp. 7-13). Association for Computing Machinery (ACM): New York, NY, USA. Green open access

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This paper presents SplitBox, an efficient system for privacy-preserving processing of network functions that are outsourced as software processes to the cloud. Specifically, cloud providers processing the network functions do not learn the network policies instructing how the functions are to be processed. First, we propose an abstract model of a generic network function based on match-action pairs. We assume that this function is processed in a distributed manner by multiple honest-but-curious cloud service providers. Then, we introduce our SplitBox system for private network function virtualization and present a proof-of-concept implementation on FastClick, an extension of the Click modular router, using a firewall as a use case. Our experimental results achieve a throughput of over 2 Gbps with 1 kB-sized packets on average, traversing up to 60 firewall rules.

Type: Proceedings paper
Title: SplitBox: Toward Efficient Private Network Function Virtualization
Event: 2016 workshop on Hot topics in Middleboxes and Network Function Virtualization (HotMIddlebox '16)
Location: Florianapolis, Brazil
Dates: 26 August 2016 - 26 August 2016
ISBN-13: 9781450344241
Open access status: An open access version is available from UCL Discovery
DOI: 10.1145/2940147.2940150
Publisher version: http://dx.doi.org/10.1145/2940147.2940150
Language: English
Additional information: Copyright © 2016 ACM.
Keywords: Middlebox Privacy; Secret Sharing; Network Function Virtualization; Firewalls
URI: http://discovery.ucl.ac.uk/id/eprint/1508468
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