LightBox : Full-stack Protected Stateful Middlebox at Lightning Speed

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)

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Author(s)

  • Xingliang Yuan
  • Yajin Zhou
  • Qian Wang

Related Research Unit(s)

Detail(s)

Original languageEnglish
Title of host publicationCCS’19
Subtitle of host publicationProceedings of the 2019 ACM SIGSAC Conference on Computer and Communications Security
PublisherACM
Pages2351-2367
ISBN (Print)9781450367479
Publication statusPublished - Nov 2019

Publication series

NameProceedings of the ACM Conference on Computer and Communications Security
ISSN (Print)1543-7221

Conference

Title26th ACM Conference on Computer and Communications Security (ACM CCS 2019)
PlaceUnited Kingdom
CityLondon
Period11 - 15 November 2019

Abstract

Running off-site software middleboxes at third-party service providers has been a popular practice. However, routing large volumes of raw traffic, which may carry sensitive information, to a remote site for processing raises severe security concerns. Prior solutions often abstract away important factors pertinent to real-world deployment. In particular, they overlook the significance of metadata protection and stateful processing. Unprotected traffic metadata like low-level headers, size and count, can be exploited to learn supposedly encrypted application contents. Meanwhile, tracking the states of 100,000s of flows concurrently is often indispensable in production-level middleboxes deployed at real networks.

We present LightBox, the first system that can drive off-site middleboxes at near-native speed with stateful processing and the most comprehensive protection to date. Built upon commodity trusted hardware, Intel SGX, LightBox is the product of our systematic investigation of how to overcome the inherent limitations of secure enclaves using domain knowledge and customization. First, we introduce an elegant virtual network interface that allows convenient access to fully protected packets at line rate without leaving the enclave, as if from the trusted source network. Second, we provide complete flow state management for efficient stateful processing, by tailoring a set of data structures and algorithms optimized for the highly constrained enclave space. Extensive evaluations demonstrate that LightBox, with all security benefits, can achieve 10Gbps packet I/O, and that with case studies on three stateful middleboxes, it can operate at near-native speed.

Research Area(s)

  • Intel SGX, stateful middleboxes, secure packet processing

Bibliographic Note

Research Unit(s) information for this publication is provided by the author(s) concerned.

Citation Format(s)

LightBox : Full-stack Protected Stateful Middlebox at Lightning Speed. / Duan, Huayi; Wang, Cong; Yuan, Xingliang; Zhou, Yajin; Wang, Qian; Ren, Kui.

CCS’19: Proceedings of the 2019 ACM SIGSAC Conference on Computer and Communications Security. ACM, 2019. p. 2351-2367 (Proceedings of the ACM Conference on Computer and Communications Security).

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)