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Aikaterini Argyraki

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Publications associées (46)

VNToR: Network Virtualization at the Top-of-Rack Switch

Aikaterini Argyraki, Georgios Ioannidis, Edouard Bugnion, Sam David Whitlock, Jonas Fietz

Cloud providers typically implement abstractions for net- work virtualization on the server, within the operating sys- tem that hosts the tenant virtual machines or containers. Despite being flexible and convenient, this approach has funda- mental problems ...

2016

Matryoshka: Hiding Secret Communication in Plain Sight

Christina Fragouli, Aikaterini Argyraki, Iris Safaka

We want to enable a pair of communicating users to exchange secret messages while hiding the fact that secret communication is taking place. We propose a linguistic steganography approach, where each human message is hidden in another human-like message. A ...

2016

Transparency Instead of Neutrality

Adrian Perrig, Aikaterini Argyraki, Christos Pappas

The technical community has so far defined network neutrality in terms of specific mechanisms, e.g., policing or shaping. We argue that these definitions are problematic: according to them, a non-neutral network may be preferable (for all users) to a neutr ...

2015

Software Dataplane Verification

Aikaterini Argyraki, Mihai Dobrescu

The industry is in the mood for programmable networks, where an operator can dynamically deploy network functions on network devices, akin to how one deploys virtual machines on physical machines in a cloud environment. Such flexibility brings along the th ...

Association for Computing Machinery2015

Software Dataplane Verification

Aikaterini Argyraki, Mihai Dobrescu

Software dataplanes are emerging as an alternative to traditional hardware switches and routers, promising programmability and short time to market. These advantages are set against the risk of disrupting the network with bugs, unpredictable performance, o ...

2014

Network Neutrality Inference

Aikaterini Argyraki, Ovidiu Sebastian Mara, Zhiyong Zhang

When can we reason about the neutrality of a network based on external observations? We prove conditions under which it is possible to (a) detect neutrality violations and (b) localize them to specific links, based on external observations. Our insight is ...

2014

Creating Secrets out of Erasures

Suhas Diggavi, Christina Fragouli, Aikaterini Argyraki, Panagiotis Kostopoulos

Current security systems often rely on the adversary's computational limitations. Wireless networks offer the opportunity for a different, complementary kind of security, which relies on the adversary's limited network presence (i.e., that the adversary ca ...

2013

Toward a Verifiable Software Dataplane

Aikaterini Argyraki, Mihai Dobrescu

Software dataplanes are emerging as an alternative to traditional hardware switches and routers, promising programmability and short time to market. These advantages are set against the concern of introducing buggy or under-performing code into the network ...

2013

SenseCode: Network Coding for Reliable Sensor Networks

Lorenzo Keller, Christina Fragouli, Aikaterini Argyraki, Emre Atsan

Designing a communication protocol for sensor networks often involves obtaining the right trade-off between energy efficiency and end-to-end packet error rate. In this article, we show that network coding provides a means to elegantly balance these two goa ...

Assoc Computing Machinery2013

Toward Predictable Performance in Software Packet-Processing Platforms

Aikaterini Argyraki, Mihai Dobrescu

To become a credible alternative to specialized hardware, general-purpose networking needs to offer not only flexibility, but also predictable performance. Recent projects have demonstrated that general-purpose multicore hardware is capable of high-perform ...

2012

Creating Shared Secrets out of Thin Air

Suhas Diggavi, Christina Fragouli, Aikaterini Argyraki, Iris Safaka

Current security systems typically rely on the adversary's computational limitations (e.g., the fact that it cannot invert a hash function or perform large-integer factorization). Wireless networks offer the opportunity for a different, complementary kind ...

Assoc Computing Machinery2012

Shifting Network Tomography Toward A Practical Goal

Patrick Thiran, Denisa Gabriela Ghita, Aikaterini Argyraki, Can Karakus

Boolean Inference makes it possible to observe the congestion status of end-to-end paths and infer, from that, the congestion status of individual network links. In principle, this can be a powerful monitoring tool, in scenarios where we want to monitor a ...

2011

Controlling Parallelism on Multi-core Software Routers

Aikaterini Argyraki, Mihai Dobrescu

Software routers promise to enable the fast deployment of new, sophisticated kinds of packet processing without the need to buy and deploy expensive new equipment. The challenge is offering such programmability while at the same time achieving a competitiv ...

2010

Verifiable Network-Performance Measurements

Aikaterini Argyraki

In the current Internet, there is no clean way for affected parties to react to poor forwarding performance: to detect and assess Service Level Agreement (SLA) violations by a contractual partner, a domain must resort to ad-hoc monitoring using probes. Ins ...

2010

Erased Secrets: Practical Information-Theoretic Group Secrecy

Suhas Diggavi, Christina Fragouli, Mahdi Jafari Siavoshani, Aikaterini Argyraki, Uday Kiran Pulleti

We consider the scenario where a group of wireless nodes want to exchange a secret key, such that no eavesdropper can guess the key. Today, this can be achieved using publickey cryptography, e.g., the Diffie-Hellman or the RSA keyexchange algorithms. Howev ...

2010

Netscope: Practical Network Loss Tomography

Patrick Thiran, Xuan Hung Nguyen, Maciej Kurant, Denisa Gabriela Ghita, Aikaterini Argyraki

We present Netscope, a tomographic technique that infers the loss rates of network links from unicast end-to-end measurements. Netscope uses a novel combination of first- and second-order moments of end-to-end measurements to identify and characterize the ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2010

Network Tomography on Correlated Links

Patrick Thiran, Denisa Gabriela Ghita, Aikaterini Argyraki

Network tomography establishes linear relationships between the characteristics of individual links and those of end-to-end paths. It has been proved that these relationships can be used to infer the characteristics of links from end-to-end measurements, p ...

2010

Joint Identity-Message Coding for Sensor Networks

Lorenzo Keller, Suhas Diggavi, Christina Fragouli, Mahdi Jafari Siavoshani, Aikaterini Argyraki

In a significant class of sensor-network applications, the identities of the reporting sensors constitute the bulk of the communicated data, whereas the message itself can be as small as a single bit—for instance, in many cases, sensors are used to detect ...

Institute of Electrical and Electronics Engineers2010

SenseCode: Network Coding for Reliable Sensor Networks

Lorenzo Keller, Christina Fragouli, Aikaterini Argyraki, Emre Atsan

Designing a communication protocol for sensor networks often involves obtaining the "right" trade-off between energy efficiency and reliability. In this paper, we show that network coding provides a means to elegantly balance these two goals. We present th ...

2009

Compressed network coding vectors

Lorenzo Keller, Christina Fragouli, Mahdi Jafari Siavoshani, Aikaterini Argyraki

In networks that employ network coding, two main approaches have been proposed in the literature to allow the receivers to recover the source information: (i) use of coding vectors, that keep track of the linear combinations the received packets contain, a ...

2009

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