Enhanced domain name system (DNS) server
Systems, methods, and devices for resolving a network address include a Domain Name System (DNS) server configured to receive a request for a resource from a client device, determine a source IP address of the client device, and determine whether the source IP address is included in a source client list. In response to determining that the source IP address is not included in the source client list, the DNS server may determine whether a default view datastore includes a record for requested resource. If the default view datastore does not include a record for requested resource, the DNS server may determine whether the requested resource is included in the view datastore. If the requested resource is included in the view datastore, the DNS server may generate and send to the client device a response message that includes a SIPNOTDEFINED indication.
1. A method for resolving a network address, comprising:
receiving a request for a resource from a client device;
determining a source IP address of the client device based on the information included in the received request;
determining whether the source IP address is included in a source client list, wherein the source client list is associated with a view datastore;
determining whether a default view datastore includes a record for requested resource in response to determine that the source IP address is not included in the source client list; and
determining whether the requested resource is included in the view datastore in response to determining that the default view datastore does not include a record for requested resource and that the source IP address is not included in the source client list.
2. The method of claim 1 , further comprising:
generating a response message that includes a SIPNOTDEFINED indication in response to determining that the requested resource is included in the view datastore; or
generating the response message to include a NXDOMAIN indication in response to determining that the requested resource is not included in the view datastore.
3. The method of claim 2 , further comprising sending the generated response message to the client device.
4. The method of claim 1 , wherein receiving the request for the resource from the client device comprises receiving a domain name system (DNS) request message from a DNS client device.
5. The method of claim 1 , wherein receiving the request for the resource from the client device comprises receiving a request message that includes a fully qualified domain name (FQDN) from the client device.
6. The method of claim 1 , wherein receiving the request for the resource from the client device comprises receiving the request in a domain name system (DNS) server.
7. The method of claim 1 , wherein determining whether the requested resource is included in the view datastore in response to determining that the default view datastore does not include a record for requested resource and that the source IP address is not included in the source client list comprises querying a database that maps resources to views.
8. The method of claim 7 , wherein querying the database that maps resources to views comprises querying a fully qualified domain name (FQDN) mappings database.
9. A computing device, comprising:
a processor configured with processor-executable software instructions to:
receive a request for a resource from a client device;
determine a source IP address of the client device based on the information included in the received request;
determine whether the source IP address is included in a source client list, wherein the source client list is associated with a view datastore;
determine whether a default view datastore includes a record for requested resource in response to determine that the source IP address is not included in the source client list; and
determine whether the requested resource is included in the view datastore in response to determining that the default view datastore does not include a record for requested resource and that the source IP address is not included in the source client list.
10. The computing device of claim 9 , wherein the processor is configured with processor-executable software instructions to:
generate a response message that includes a SIPNOTDEFINED indication in response to determining that the requested resource is included in the view datastore; or
generate the response message to include a NXDOMAIN indication in response to determining that the requested resource is not included in the view datastore.
11. The computing device of claim 10 , wherein the processor is configured with processor-executable software instructions to send the generated response message to the client device.
12. The computing device of claim 9 , wherein the processor is configured with processor-executable software instructions to receive the request for the resource from the client device by receiving a domain name system (DNS) request message from a DNS client device.
13. The computing device of claim 9 , wherein the processor is configured with processor-executable software instructions to receive the request for the resource from the client device by receiving a request message that includes a fully qualified domain name (FQDN) from the client device.
14. The computing device of claim 9 , wherein the processor is configured with processor-executable software instructions to receive the request for the resource from the client device by receiving the request in a domain name system (DNS) server.
15. The computing device of claim 9 , wherein the processor is configured with processor-executable software instructions to determine whether the requested resource is included in the view datastore in response to determining that the default view datastore does not include a record for requested resource and that the source IP address is not included in the source client list by querying a database that maps resources to views.
16. The computing device of claim 15 , wherein the processor is configured with processor-executable software instructions to query the database that maps resources to views by querying a fully qualified domain name (FQDN) mappings database.
17. A non-transitory processor-readable storage medium having stored thereon processor-executable instructions configured to cause a processor of a computing device to perform operations for resolving a network address, the operations comprising:
receiving a request for a resource from a client device;
determining a source IP address of the client device based on the information included in the received request;
determining whether the source IP address is included in a source client list, wherein the source client list is associated with a view datastore;
determining whether a default view datastore includes a record for requested resource in response to determine that the source IP address is not included in the source client list; and
determining whether the requested resource is included in the view datastore in response to determining that the default view datastore does not include a record for requested resource and that the source IP address is not included in the source client list.
18. The non-transitory processor-readable storage medium of claim 17 , wherein the stored processor-executable instructions are configured to cause a processor to perform operations further comprising:
generating a response message that includes a SIPNOTDEFINED indication in response to determining that the requested resource is included in the view datastore; or
generating the response message to include a NXDOMAIN indication in response to determining that the requested resource is not included in the view datastore.
19. The non-transitory processor-readable storage medium of claim 18 , wherein the stored processor-executable instructions are configured to cause a processor to perform operations further comprising sending the generated response message to the client device.
20. The non-transitory processor-readable storage medium of claim 17 , wherein the stored processor-executable instructions are configured to cause a processor to perform operations such that receiving the request for the resource from the client device comprises receiving a domain name system (DNS) request message from a DNS client device.
21. The non-transitory processor-readable storage medium of claim 17 , wherein the stored processor-executable instructions are configured to cause a processor to perform operations such that receiving the request for the resource from the client device comprises receiving a request message that includes a fully qualified domain name (FQDN) from the client device.
22. The non-transitory processor-readable storage medium of claim 17 , wherein the stored processor-executable instructions are configured to cause a processor to perform operations such that receiving the request for the resource from the client device comprises receiving the request in a domain name system (DNS) server.
23. The non-transitory processor-readable storage medium of claim 17 , wherein the stored processor-executable instructions are configured to cause a processor to perform operations such that determining whether the requested resource is included in the view datastore in response to determining that the default view datastore does not include a record for requested resource and that the source IP address is not included in the source client list comprises querying a database that maps resources to views.
24. The non-transitory processor-readable storage medium of claim 23 , wherein the stored processor-executable instructions are configured to cause a processor to perform operations such that querying the database that maps resources to views comprises querying a fully qualified domain name (FQDN) mappings database.