Content delivery networks must balance a number of trade-offs when deciding how to direct
a client to a CDN server. Whereas DNS-based redirection requires a complex global traffic …

Anycast is widely used today to provide important services such as DNS and Content
Delivery Networks (CDNs). An anycast service uses multiple sites to provide high …

To enhance Web browsing experiences, content distribution networks (CDNs) move Web
content¿ closer¿ to clients by caching copies of Web objects on thousands of servers …

Content Delivery Networks (CDNs) deliver much of the world's web, video, and application
content on the Internet today. A key component of a CDN is the mapping system that uses …

Distributed Denial-of-Service (DDoS) attacks continue to be a major threat on the Internet
today. DDoS attacks overwhelm target services with requests or other traffic, causing …

The DNS root nameservers routinely use anycast in order to improve their service to clients
and increase their resilience against various types of failures. We study DNS traffic collected …

We describe how malicious customers can attack the availability of Content Delivery
Networks (CDNs) by creating forwarding loops inside one CDN or across multiple CDNs …

BACKGROUND Packet-switched networks, such as networks based on the TCP/IP protocol
suite, can distribute a rich array of digital content to a variety of client applications. One …

Internet anycast depends on inter-domain routing to direct clients to their" closest" sites.
Using data collected from a root DNS server for over a year (400M+ queries/day from 100+ …

Replicating content across a geographically distributed set of servers and redirecting clients
to the closest server in terms of latency has emerged as a common paradigm for improving …