The Peer Sampling Service (PSS) has been proposed as a method to initiate and maintain the set of connections between nodes in unstructured peer to peer (P2P) networks. The PSS usually relies on gossip-style communication where participants exchange their links in a randomized way. However, the PSS network organization can be easily modified by malicious nodes running a “hub attack", in which they achieve a leading structural position. From this pres- tigious status, the malicious nodes can severely affect the overlay and achieve several application dependent advantages. We present a novel method to overcome this attack and provide results from simulation experiments that validate our claim. This method is in- spired by a simple technique used to detect social leaders in firm’s organizations that is based on the social (structural) “prestige" of actors.
G. P. Jesi, S. K. Nair, M. van Steen, E. Mollona (2009). Prestige-based peer sampling service: Interdisciplinary approach to secure gossip. NEW YORK : ACM [10.1145/1529282.1529552].
Prestige-based peer sampling service: Interdisciplinary approach to secure gossip
JESI, GIAN PAOLO;MOLLONA, EDOARDO VINCENZO EUGENIO
2009
Abstract
The Peer Sampling Service (PSS) has been proposed as a method to initiate and maintain the set of connections between nodes in unstructured peer to peer (P2P) networks. The PSS usually relies on gossip-style communication where participants exchange their links in a randomized way. However, the PSS network organization can be easily modified by malicious nodes running a “hub attack", in which they achieve a leading structural position. From this pres- tigious status, the malicious nodes can severely affect the overlay and achieve several application dependent advantages. We present a novel method to overcome this attack and provide results from simulation experiments that validate our claim. This method is in- spired by a simple technique used to detect social leaders in firm’s organizations that is based on the social (structural) “prestige" of actors.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.