Now showing items 21-37 of 37

  • Is our ground-truth for traffic classification reliable? 

    Carela Español, Valentín; Bujlow, Tomasz; Barlet Ros, Pere (2014)
    Conference report
    Restricted access - publisher's policy
    The validation of the different proposals in the traffic classification literature is a controversial issue. Usually, these works base their results on a ground-truth built from private datasets and labeled by techniques ...
  • ITMgen - A first-principles approach to generating synthetic interdomain traffic matrices 

    Mikians, Jakub; Laoutaris, Nikolaos; Dhamdhere, Amogh; Barlet Ros, Pere (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Conference report
    Open Access
    We present the design and evaluation of ITMgen, a tool for generating synthetic but representative Interdomain Traffic Matrices (ITMs). ITMgen is motivated by the observation that gravity-based models do not reflect ...
  • Knowledge-defined networking 

    Mestres Sugrañes, Albert; Rodríguez Natal, Alberto; Carner Marsal, Josep; Barlet Ros, Pere; Alarcón Cot, Eduardo José; Sole, Marc; Muntés Mulero, Victor; Meyer, David; Barkai, Sharon; Hibbett, Mike J.; Estrada, Giovani; Coras, Florin-Tudorel; Ermagan, Vina; Latapie, Hugo; Cassar, Chris; Evans, John; Walrand, Jean; Cabellos Aparicio, Alberto (2017-07-01)
    Article
    Open Access
    The research community has considered in the past the application of Artificial Intelligence (AI) techniques to control and operate networks. A notable example is the Knowledge Plane proposed by D.Clark et al. However, ...
  • Load shedding in network monitoring applications 

    Barlet Ros, Pere (Universitat Politècnica de Catalunya, 2008-12-15)
    Doctoral thesis
    Open Access
    Monitoring and mining real-time network data streams are crucial operations for managing and operating data networks. The information that network operators desire to extract from the network traffic is of different size, ...
  • Measuring video QoE from encrypted traffic 

    Dimopoulos, Georgios; Leontiadis, Ilias; Barlet Ros, Pere; Papagiannaki, Konstantina (Association for Computing Machinery (ACM), 2016)
    Conference report
    Restricted access - publisher's policy
    Tracking and maintaining satisfactory QoE for video streaming services is becoming a greater challenge for mobile network operators than ever before. Downloading and watching video content on mobile devices is currently a ...
  • Network Polygraph: An innovative network visibility service (not only) for NRENs 

    Barlet Ros, Pere; Sanjuàs Cuxart, Josep; Solé Pareta, Josep; Gandía, Maria Isabel; Malagón, Chelo (2015)
    Conference lecture
    Open Access
    We present Network Polygraph (https://polygraph.io), a network monitoring service based on NetFlow/IPFIX that benefits from more than 10 years of research in the fields of network monitoring and traffic classification at ...
  • Performance of direct-oversampling correlator-type receivers in chaos-based DS-CDMA systems over frequency non-selective fading channels 

    Nguyen, Xuan Quyen; Barlet Ros, Pere (2017-03-08)
    Article
    Open Access
    In this paper, we present a study on the performance of direct-oversampling correlator-type receivers in chaos-based direct-sequence code division multiple access systems over frequency non-selective fading channels. At ...
  • Routing based on deep reinforcement learning in optical transport networks 

    Suárez-Varela Maciá, José Rafael; Mestres Sugrañes, Albert; Yu, Junlin; Kuang, Li; Feng, Haoyu; Barlet Ros, Pere; Cabellos Aparicio, Alberto (2019)
    Conference report
    Restricted access - publisher's policy
    This paper addresses the use of Deep Reinforcement Learning for automatic routing in Optical Transport Networks at the electrical-layer level. We propose a DRL-based solution that achieves both high performance and fast learning.
  • SBAR: SDN flow-based monitoring and application recognition 

    Suárez-Varela Maciá, José Rafael; Barlet Ros, Pere (Association for Computing Machinery (ACM), 2018)
    Conference report
    Restricted access - publisher's policy
    We present SBAR, a monitoring system compliant with OpenFlow that provides flow-level measurement reports similar to those of NetFlow in traditional networks, but additionally enriched with labels that classify flows at ...
  • Scan detection under sampling: a new perspective 

    Paredes Oliva, Ignasi; Barlet Ros, Pere; Solé Pareta, Josep (2013-04-01)
    Article
    Restricted access - publisher's policy
    In tests using the same fraction of packets for comparison, packet sampling outperformed flow sampling for scan detection, while both selective sampling and a proposed extension that uses significantly less resources were ...
  • Skettching the delay: tracking temporally uncorrelated flow-level latancies 

    Sanjuàs Cuxart, Josep; Barlet Ros, Pere; Duffield, Nick; Kompella, Ramana (2011)
    Conference report
    Restricted access - publisher's policy
    Packet delay is a crucial performance metric for real-time, network-based applications. Obtaining per-flow delay measurements is particularly important to network operators, but is computationally challenging in high-speed ...
  • SUNSET: sustainable network infrastructure enabling the future digital society 

    Lázaro Villa, José Antonio; Spadaro, Salvatore; Perelló Muntan, Jordi; Gené Bernaus, Joan M.; Altabas, Jose Antonio; Pagès Cruz, Albert; Careglio, Davide; Barlet Ros, Pere; Cabellos Aparicio, Alberto; Solé Pareta, Josep (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Conference report
    Restricted access - publisher's policy
    The ICT eco-system is constantly growing in traffic demands, with emerging cloud services, mobile and social network technologies to be integrated in 5G networks. New architectural changes at the underlying networks are ...
  • Towards accurate classification of HTTPS traffic in Software-Defined Networks 

    Suárez-Varela Maciá, José Rafael; Barlet Ros, Pere (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Conference report
    Restricted access - publisher's policy
    In nowadays Internet, there is a strong trend to encrypt the traffic in order to protect users' privacy. This results in a hard challenge for traffic classification, as the payload in the packets cannot be accessed anymore. ...
  • Towards accurate detection of obfuscated web tracking 

    Le, Hoan; Fallace, Federico; Barlet Ros, Pere (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference report
    Open Access
    Web tracking is currently recognized as one of the most important privacy threats on the Internet. Over the last years, many methodologies have been developed to uncover web trackers. Most of them are based on static code ...
  • Towards a NetFlow implementation for OpenFlow software-defined networks 

    Suárez-Varela Maciá, José Rafael; Barlet Ros, Pere (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference report
    Open Access
    Obtaining flow-level measurements, similar to those provided by Netflow/IPFIX, with OpenFlow is challenging as it requires the installation of an entry per flow in the flow tables. This approach does not scale well with ...
  • Una herramienta automática de feedback para ensamblador 

    Álvarez Martínez, Carlos; Jiménez González, Daniel; López Álvarez, David; Alonso López, Javier; Tous Liesa, Rubén; Parcerisa Bundó, Joan Manuel; Barlet Ros, Pere; Fernández Barta, Montserrat; Tubella Murgadas, Jordi; Pérez, Christian (2008-10)
    External research report
    Open Access
    Un estudiante de primer curso de Ingeniería en Informática debe adquirir la capacidad de analizar y depurar códigos, tanto a alto nivel como en ensamblador. Este proceso requiere una participación activa por parte de los ...
  • Web tracking: Mechanisms, implications, and defenses 

    Bujlow, Tomasz; Carela Español, Valentín; Solé Pareta, Josep; Barlet Ros, Pere (2015-07-28)
    External research report
    Open Access
    This articles surveys the existing literature on the methods currently used by web services to track the user online as well as their purposes, implications, and possible user’s defenses. A significant majority of ...