LISA '03 Abstract
Three Practical Ways to Improve Your Network
Kevin Miller, Carnegie Mellon University
This paper presents three simple techniques for improving network
service using relatively unknown features of many existing networks.
The resulting system provides greater reliability, enhanced security,
and ease of management. First, it addresses the application of IP
anycast to provide reliable recursive DNS service. Next, it explains
the use of unicast reverse path forwarding and its usefulness in
preventing local nodes from originating packets with spoofed source
addresses. Finally, it explains how unicast reverse path forwarding
can be used to quickly and easily apply source address filters on your
network. As an added benefit, some of these features provide
mechanisms to conform a network to Best Common Practices (BCP) of
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