Method and apparatus for domain name service request resolution
First Claim
1. A method for resolving a Domain Name Service (DNS) request having a domain name query and a destination address in a gateway with more than one accessible network, each accessible network having a domain name, the method including:
- 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 said first matching accessible network if an accessible network is found whose domain name matches the domain name query; and
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.
1 Assignment
0 Petitions
Accused Products
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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Citations
33 Claims
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1. A method for resolving a Domain Name Service (DNS) request having a domain name query and a destination address in a gateway with more than one accessible network, each accessible network having a domain name, the method including:
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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 said first matching accessible network if an accessible network is found whose domain name matches the domain name query; and
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. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for resolving a Domain Name Service (DNS) request having a domain name query and a destination addressing in a gateway with more than one accessible network, each accessible network having a domain name, the method including:
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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
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. - View Dependent Claims (8, 9, 10, 11)
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12. A gateway capable of resolving a Domain Name Service (DNS) request having a domain name query and a destination address, the gateway including:
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a list of currently accessible networks and their corresponding domain names;
a domain name query comparator coupled to said list;
a DNS request alterer coupled to said list and to said domain name query comparator if an accessible network is found whose domain name matches the domain name query;
a DNS request forwarder coupled to said domain name query comparator if none of the domain names of said accessible networks match the domain name query of the DNS request;
said DNS request forwarder further coupled to said DNS request alterer if an accessible network is found whose domain name matches the domain name query;
said DNS request forwarder further coupled to the first matching network if an accessible network is found whose domain name matches the domain name query;
said DNS request forwarder further coupled to a default network if none of the domain names of said accessible networks match the domain name query of the DNS request. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A gateway capable of resolving a Domain Name Service (DNS) request having a domain name query and a destination address, the gateway including:
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a list of currently accessible networks and their corresponding domain names;
a domain name query comparator coupled to said list;
a DNS request alterer coupled to said list and to said domain name query comparator if an accessible network is found whose domain name matches the domain name query;
a DNS request forwarder coupled to said domain name query comparator if none of the domain names of said accessible networks match the domain name query of the DNS request;
said DNS request forwarder further coupled to said DNS request alterer if an accessible network is found whose domain name matches the domain name query;
said DNS request forwarder further coupled to the first matching network if an accessible network is found whose domain name matches the domain name query;
said DNS request forwarder further coupled to the largest accessible network if none of the domain names of said accessible networks match the domain name query of the DNS request. - View Dependent Claims (19, 20, 21, 22)
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23. A program storage device readable by a machine, tangibly embodying a program of instructions executable by the machine to perform method steps for resolving a Domain Name Service (DNS) request having a domain name query and a destination address in a gateway with more than one accessible network, each accessible network having a domain name, said method steps comprising:
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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 said first matching accessible network if an accessible network is found whose domain name matches the domain name query; and
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. - View Dependent Claims (24, 25, 26, 27, 28)
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29. A program storage device readable by a machine, tangibly embodying a program of instructions executable by the machine to perform method steps for resolving a Domain Name Service (DNS) request having a domain name query and a destination address in a gateway with more than one accessible network, each accessible network having a domain name, said method steps comprising:
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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
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. - View Dependent Claims (30, 31, 32, 33)
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Specification