ContentFlow: Adding content primitives to software defined networks

Chanda, Abhishek; Westphal, Cédric

doi:10.1109/glocom.2013.6831390

Cited by 24 publications

(12 citation statements)

References 19 publications

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“…At the same time, the request handler may further improve the cache placement, because it has a global view of chunk distribution. For example, some metadata can be appended with each chunk for labeling popular chunks [8]. Based on the metadata, the request handler can issue the instruction to ask the routers to perform chunk replication or replacement passively.…”

Section: Encrypted Dynamic Cache Managementmentioning

confidence: 99%

“…Our design requires the request handler to maintain the mapping between the chunk pseudonym and the cache addresses in an addressing table. Such full-mirror knowledge is helpful to fast decide the routing and optimize the cache placement [8], [30], [31]. In practice, this table can be deployed in any highperformance data store.…”

Section: Secure and Efficient Video Deliverymentioning

confidence: 99%

“…Our proposed systems are related to a number of work (to list a few) [6]- [8], [36], [37] on leveraging in-network caching for redundancy elimination, i.e., a technique that aims to identify and remove redundant network traffic in a network. Spring et al [36] first introduce the notion of redundancy elimination (RE) and propose a packet-level RE via carefully designed packet fingerprints.…”

Section: Related Workmentioning

confidence: 99%

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Enabling Secure and Efficient Video Delivery Through Encrypted In-Network Caching

Yuan

Wang

et al. 2016

IEEE J. Select. Areas Commun.

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In-network content caching has been a natural trend in emerging network architectures to handle the exponential growth of video traffic. However, due to the potentially wide attacking surfaces, caching video content in the increasingly untrusted networked environment inevitably raises new concerns on user privacy exposure and unauthorized video access. Existing encrypted protocols like HTTPs either fall short of fully leveraging in-network caching or require decrypting the traffic in the middle without guaranteeing the end-to-end security.In this paper, we present a new networked system for efficient encrypted video delivery while preserving the benefits of in-network caching. As video chunks are encrypted before distribution, we first design a compact, efficient, yet encrypted video fingerprint index to empower the network with a fullycontrolled capability of locating the cached encrypted chunks for given encrypted requests. We then explain how to deploy the encrypted design in our proposed architecture, and present a secure redundancy elimination protocol to enable fast video delivery via leveraging cached encrypted chunks. We further discuss the full support of cache management, adaptive video delivery, and video access control. Rigorous analysis and prototype evaluations demonstrate the security, efficiency, and effectiveness of the design.Index Terms-Secure video delivery, encrypted in-network caching, secure redundancy elimination.

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Section: Encrypted Dynamic Cache Managementmentioning

confidence: 99%

Section: Secure and Efficient Video Deliverymentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

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Enabling Secure and Efficient Video Delivery Through Encrypted In-Network Caching

Yuan

Wang

et al. 2016

IEEE J. Select. Areas Commun.

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“…We extended the ICN architecture detailed in [13], [14] and interfaced it to the open source DASH client [18]. We configured the network setup on a single Linux machine: an Open vSwitch connecting four virtual machines (VMs).…”

Section: B Effect Of Caching On Rate Adaptationmentioning

confidence: 99%

“…This is similar to current HTTP proxies and caches [12], and our results have applicability beyond ICNs to such systems of web proxies. [13], [14] specified an architecture where this edge cache is distributed over an access network domain, and managed by a modified content-aware SDN controller. This controller allows content routing over IP network for HTTP requests.…”

Section: Related Work and Backgroundmentioning

confidence: 99%

On the Interaction of Adaptive Video Streaming with Content-Centric Networking

Grandl

Westphal

2013

2013 20th International Packet Video Workshop

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Abstract-Two main trends in today's internet are of major interest for video streaming services: most content delivery platforms coincide towards using adaptive video streaming over HTTP and new network architectures allowing caching at intermediate points within the network. We investigate one of the most popular streaming service in terms of rate adaptation and opportunistic caching. Our experimental study shows that the streaming client's rate selection trajectory, i.e., the set of selected segments of varied bit rates which constitute a complete video, is not repetitive across separate downloads. Also, the involvement of caching could lead to frequent alternation between cache and server when serving back client's requests for video segments. These observations warrant cautions for rate adaption algorithm design and trigger our analysis to characterize the performance of in-network caching for HTTP streaming. Our analytic results show: (i) a significant degradation of cache hit rate for adaptive streaming, with a typical file popularity distribution in nowadays internet; (ii) as a result of the (usually) higher throughput at the client-cache connection compared to client-server one, cacheserver oscillations due to misjudgments of the rate adaptation algorithm occur. Finally, we introduce DASH-INC, a framework for improved video streaming in caching networks including transcoding and multiple throughput estimation.

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