Security Alert: DNS Root Servers Survive Attack… Barely

During the evening of Monday, 21 October 2002, 13 vital pieces of Internet infrastructure suffered an hour-long attack that almost brought them to their virtual knees.

During the evening of Monday, 21 October 2002, 13 vital pieces of Internet infrastructure suffered an hour-long attack that almost brought them to their virtual knees. The domain name system, or DNS, allows users to type mnemonic names (such as “www.extremetech.com”) instead of cryptic IP addresses (such as 63.111.13.100). It’s structured as a distributed database. Each level of the name — from the “.com” backward to the “www” — may be determined by a different server in a different part of the world. The 13 DNS “root servers” lie at the top of the hierarchy, and are the first stop when your ISP’s equipment looks up the name preceding the “.com” for you. For example, your ISP might go to the root servers to find the address of the name server responsible for the domain “extremetech.com”. Read on: http://www.extremetech.com/article2/0,3973,646157,00.asp

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