Basic HTML version of Foils prepared May 19 99

Foil 18 DNS Cache Poisoning (1)

From Computer Crimes: Examples of Network Security attacks Tango Group Internal Technology Seminars -- April 23 99. by Roman Markowski
DNS - Domain Name Service - critical component of the Internet; maps names to IP addresses; mail exchanger
Clients use resolver to access DNS servers
BIND - Berkeley Internet Name Domain - most common DNS
DNS servers query each other to resolve names (QueryID)
To lower traffic requirements, DNS servers will cache answers
Client
Local
DNS
Company
DNS
COM
DNS
Root
DNS
www.company.com

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Page produced by wwwfoil on Mon Aug 16 1999