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Welcome to my website. Here you will find information about me, my hobbies and my professional career.
I hope what you will find here will be useful for you. Please keep an eye on the blog to be up to date of all news of this web.
17/05/11: Hub-and-spoke federation monitoring
One essential aspect of every network service is the ability to monitor its status along time. There are many mature solutions currently available in the market, but there's still an important lack of what refers to complex web application monitoring. Identity federations, and more precisely, their web profiles, have become critical for institutions, so there's a clear need to develop a monitoring system capable of determining the exact status of the infrastructure, as accurate and close to the user's experience as possible
TERENA Networking Conference, 2011, Prague, Czech Republic
02/06/10: Invitation based authorization in federated systems
Federations are growing faster and bigger in the Internet and, more specifically, in the academic networks. Once solved the main problem of interconnecting services with identity providers and making them talk a common language to exchange identity information, current research is focused on the high level features that should be provided by federated architectures, that is, attribute aggregation and authorization. This paper examines a solution to provide services with an external, distributed way of authorizing their users, easier to deploy than current approaches, making it compatible with group management tools, and finally simpler to use for both users and administrators.
TERENA Networking Conference Proceedings, 2010, Vilnius, Lithuania.
14/09/07: Aretusa, reputation system for BitTorrent
Peer to peer applications are a powerful way to share contents within a network, scalable and efficient. At least theoretically, due to a problem that peer to peer protocols have, known as free-riding. That means any peer is able to download at the maximum rate without even sharing a single byte with other peers in the network. This paper proposes an extension to BitTorrent protocol to try to avoid this problem and enhance it to allow its masive usage.
Paper published in the Terena Networking Conference 2008.
05/08/06: OS Fingerprinting
Uno de los factores más importantes a la hora de realizar un ataque informático consiste en conocer la mayor cantidad de detalles posible sobre el sistema objetivo. Para el administrador de sistemas, evitar dar a conocer detalles sobre el servicio puede servir de ayuda para mantenerlo seguro. En este artículo veremos las técnicas desarrolladas hasta el día de hoy para averiguar el sistema operativo que se ejecuta en una máquina remota sin necesidad de tener acceso a la misma.
