Method and apparatus for domain name service request resolution
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United States of America Patent
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Feb 25, 2003
Issued Date -
N/A
app pub date -
Apr 17, 2001
filing date -
Nov 19, 1998
priority date (Note) -
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status (Latency Note)
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Abstract
A gateway is provided which resolves a DNS request in a manner that minimizes the time and bandwidth required to conduct a DNS search as well as increases the chances that a DNS request will be answered for systems in which the gateway is connected to more than one network simultaneously. The gateway performs this by: comparing the domain name query of the DNS request to the domain name of each accessible network; altering the DNS request so that the destination address of the DNS request corresponds to a DNS server within the first matching accessible network, if an accessible network is found whose domain name matches the domain name query; forwarding the DNS request to the first matching accessible network if an accessible network is found whose domain name matches the domain name query; and either forwarding the unaltered DNS request to a network specified by a user if none of the domain names of the accessible networks match the domain name query of the DNS request or forwarding the unaltered DNS request to the largest accessible network unaltered if none of the domain names of the accessible networks match the domain name query of the DNS request.
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