DocumentCode :
1898510
Title :
DNS measurements at a root server
Author :
Brownlee, Nevil ; Claffy, Kc ; Nemeth, Evi
Author_Institution :
Auckland Univ., New Zealand
Volume :
3
fYear :
2001
fDate :
2001
Firstpage :
1672
Abstract :
The Domain Name System (DNS) prescribes domain names to be used in network transactions (email, web requests, etc.) instead of IP addresses. The root of the DNS distributed database is managed by 13 root nameservers. We passively measure the performance of one of them: F.root-servers.net. These measurements show an astounding number of bogus queries: from 60-85% of observed queries were repeated from the same host within the measurement interval. Over 14% of a root server´s query load is due to queries that violate the DNS specification. Denial of service attacks using root servers are common and occurred throughout our measurement period (7-24 Jan 2001). Though not targeted at the root servers, DOS attacks often use root servers as reflectors toward a victim network. We contrast our observations with those found in an earlier study of DNS root server performance by Danzig et. al., (1992)
Keywords :
Internet; distributed databases; performance evaluation; telecommunication network routing; telecommunication security; DNS; Domain Name System; Internet; bogus queries; denial of service attacks; distributed database; network transactions; performance; root nameservers; Computer crime; Distributed databases; Domain Name System; Electronic mail; Internet; Network servers; Protocols; Robustness; Transaction databases; Web server;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Global Telecommunications Conference, 2001. GLOBECOM '01. IEEE
Conference_Location :
San Antonio, TX
Print_ISBN :
0-7803-7206-9
Type :
conf
DOI :
10.1109/GLOCOM.2001.965864
Filename :
965864
Link To Document :
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