PrIXP: Preserving the Privacy of Routing Policies at Internet eXchange Points 🗓 🗺

When

Thursday, May 4th at 2:30 PM

Where

Department of Engineering
Section of Computer Science and Automation
Via della Vasca Navale, 79
Meeting room (1.10) on 1st floor

Speaker Gabriele Lospoto

Postdoctoral Researcher in Computer Science and Automation
Roma Tre University
http://www.dia.uniroma3.it/~compunet/www/view/person.php?id=gabriele

Abstract

Internet eXchange Points (IXPs) serve as landmarks where many network service
providers meet to obtain reciprocal connectivity. Some of them, especially the
largest, offer route servers as a convenient technology to simplify the setup
of a high number of bi-lateral peerings. Due to their potential to support a
quick and easy interconnection among the networks of multiple providers, IXPs
are becoming increasingly popular and widespread, and route servers are
exploited increasingly often. However, in an ever-growing level of market
competition, service providers are pushed to develop concerns about many
aspects that are strategic for their business, ranging from commercial
agreements with other members of an IXP to the policies that are adopted in
exchanging routing information with them. Although these aspects are
notoriously sensitive for network service providers, current IXP architectures
offer no guarantees to enforce the privacy of such business-critical
information. We re-design a traditional route server and propose an approach
to enforce the privacy of peering relationships and routing policies that it
manages. Our proposed architecture ensures that nobody, not even a third
party, can access such information unless it is the legitimate owner (i.e.,
the IXP member that set up the policy), yet allowing the route server to apply
the requested policies and each IXP member to verify that such policies have
been correctly deployed. We implemented the route server and tested our
solutions in a simulated environment, tracking and analyzing the number of
exchanged control plane messages.

Joint work with M. Chiesa, R. di Lallo, H. Mostafaei, M. Rimondini, and G. Di
Battista

The paper will be presented at the forthcoming IFIP/IEEE IM 2017 (http://
im2017.ieee-im.org/)