A year after surviving a massive distributed denial-of-service attack, the Internet's root servers are better fortified against hacker activity, thanks to behind-the-scenes deployment of a routing technique known as Anycast, experts say.
With Anycast, the root server operators have more than doubled the number of server farms available to handle the highest-level DNS queries. This routing technique heightens root server resilience by multiplying the number of servers with the same IP address and balancing the load across an army of geographically dispersed servers.
A handful of the 13 root server operators have begun deploying Anycast since last year's attack, which didn't succeed in crashing DNS but rendered several root servers unavailable for legitimate queries. Experts say the deployment of Anycast is making the entire root-server system more resistant to outage.
The link for this article located at NW Fusion is no longer available.
