Date of this Version
Michael Hicks, Angelos D. Keromytis, and Jonathan M. Smith, "A Secure PLAN (Extended Version)", . May 2002.
Active Networks promise greater flexibility than current networks, but threaten safety and security by virtue of their programmability. In this paper, we describe the design and implementation of a security architecture for the active network PLANet . Security is obtained with a two-level architecture that combines a functionally restricted packet language, PLAN , with an environment of general-purpose service routines governed by trust management . In particular, we employ a technique which expands or contracts a packet’s service environment based on its level of privilege, termed namespace-based security. As an application of our security architecture, we present the design and implementation of an active-network firewall. We find that the addition of the firewall imposes an approximately 34% latency overhead and as little as a 6.7% space overhead to incoming packets.
Date Posted: 15 November 2004
This document has been peer reviewed.