Protecting against spoofed DNS messages
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United States of America Patent
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Jun 14, 2005
Grant Date -
Apr 10, 2003
app pub date -
Sep 20, 2002
filing date -
Aug 14, 2001
priority date (Note) -
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Abstract
A method for authenticating communication traffic includes receiving a first request, such as a DNS request, sent over a network from a source address, to provide network information regarding a given domain name. A response is sent to the source address in reply to the first request. When a second request is from the source address in reply to the response, the authenticity of the first request is assessed based on the second request.
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