Method and apparatus for maintaining internet domain name data

• US 20040083306A1
• Filed: 10/24/2002
• Published: 04/29/2004
• Est. Priority Date: 10/24/2002
• Status: Active Grant

• Current Assignee: Daedalus Blue LLC
• Original Assignee: International Business Machines Corporation
• Inventors: Gloe, Christopher Thomas
• Granted Patent: US 7,734,745 B2
• Time in Patent Office: Days
• US Class Current: 709/245
• CPC Class Codes: H04L 61/4511 using domain name system [DNS]
• CPC Class Codes: H04L 61/5007 Internet protocol [IP] addresses
• CPC Class Codes: H04L 61/5038 for local use, e.g. in LAN or USB networks, or in a controller area network [CAN]

Abstract

A host node connected to the Internet automatically generates an Internet interface addresses for itself, and automatically generates a request to an Internet domain name server to update the domain name server'"'"'s database with the self-generated address. Preferably, the node employs a draft standard stateless address autoconfiguration protocol to create a link-local address, find a router, obtain a prefix from the router, and generate a global address from the prefix and the link-local address. Preferably, the node automatically determines the identity of its master domain name server, and transmits a request to update the master'"'"'s database using a BIND 8 (or subsequent) protocol. Such a request may be encrypted for security and may include a self-generated identity key for further security.

Claims

1. A method of maintaining Internet domain name data, comprising the steps of:

automatically generating an IP address of a host node attached to the Internet;

defining an Internet domain name for said host node;

automatically transmitting a request to update domain name data relating to said host node, said domain name data residing in a first domain name server, said request being transmitted from said host node to said first domain name server, said request including said IP address generated by said automatically generating step; and

automatically updating domain name data in said first domain name server responsive to receiving said request at said first domain name server, said automatically updating step associating said IP address generated by said automatically generating step with said Internet domain name for said host node.

2. The method of claim 1, further comprising the step of:

automatically discovering the identity of said first domain name server from a response to at least one query generated by said host node and transmitted to at least one other node.

3. The method of claim 2, wherein said step of automatically discovering the identity of said first domain name server comprises:

automatically determining the identity of a local domain name server, said local domain name server being attached to a local network to which said host node is attached; and

automatically obtaining the identity of said first domain name server from said local domain name server.

4. The method of claim 1, wherein said first domain name server is a master domain name server which authoritatively maintains domain name records for nodes within an Internet zone, said zone including said host node.

5. The method of claim 1, wherein said step of automatically generating an IP address for said host node comprises the steps of:

automatically generating a link-local address for said host node recognizable on a local link, said automatically generating a link-local address being performed by said host node;

automatically soliciting information from a router connected to said local link;

receiving information in said host node from said router responsive to said automatically soliciting step, said information including a portion of an IP address for said host node; and

automatically constructing said IP address from said portion of an IP address received from said router and said link-local address, said automatically constructing step being performed by said host node.

6. The method of claim 5, wherein said step of automatically generating an IP address for said host node further comprises the step of:

automatically verifying the uniqueness of said link-local address on said local link.

7. The method of claim 1, wherein said step of defining an Internet domain name for said host node comprises:

automatically determining a zone common portion of said Internet domain name, said zone common portion being common to a plurality of nodes within an Internet zone;

defining a zone unique portion of said Internet domain name, said zone unique portion being unique to said host node within said Internet zone; and

combining said zone unique portion with said zone common portion.

8. The method of claim 7, wherein said step of automatically determining a zone common portion of said Internet domain name comprises:

obtaining said zone common portion from a domain name server.

9. The method of claim 1, wherein said step of automatically transmitting a request to update domain name data comprises encrypting at least a portion of said request.

10. The method of claim 9,

wherein said step of automatically transmitting a request to update domain name data comprises encrypting a requester identifier with said request to update domain name data;

and

wherein said automatically updating domain name data step comprises verifying said requester identifier, and updating domain name data only if said requester identifier is successfully verified, said verifying and updating steps being performed by said first domain name server.

11. The method of claim 10,

wherein said step of automatically transmitting a request to update domain name data further comprises automatically generating a first requester identifier at said host node, said first requestor identifier being unique to said host node;

and

wherein said step of verifying said requester identifier comprises;

(a) if said domain name is a new domain name, then generating a new domain name record for said domain name and saving said first requester identifier with said domain name record; and

(b) if said domain name is not a new domain name, then comparing a second requester identifier, said second requestor identifier being saved in a domain name record associated with said domain name, with the first requestor identifier, and verifying the requester identifier only if the first and second requester identifiers are identical.

12. The method of claim 9, wherein encrypting at least a portion of said request comprises encrypting said at least a portion of said request according to a public/private key encryption algorithm using a public key for said first domain name server.

13. The method of claim 1, wherein said step of automatically transmitting a request to update domain name data comprises generating a request according to one of the set consisting of:

a BIND 8 protocol, a BIND 9 protocol, and a subsequent version of a BIND protocol.

14. The method of claim 1, wherein said step of automatically updating data in said first domain name server comprises generating a new database record for said domain name, said new record associating said IP address with said domain name

15. The method of claim 1, wherein said step of automatically updating data in said first domain name server comprises updating an existing database record for said domain name to associate said IP address with said domain name in said existing record.

16. A computer program product for supporting Internet access in a host node computer system coupled to the Internet, said computer program product comprising:

a plurality of processor executable instructions recorded on signal-bearing media, wherein said instructions, when executed by at least one processor in said host node, cause said host node to perform the steps of;

automatically generating an IP address of said host node;

receiving data defining an Internet domain name for said host node; and

automatically transmitting a request to update domain name data relating to said host node, said domain name data residing in a first domain name server, said request being transmitted from said host node to said first domain name server, said request including said IP address generated by said automatically generating step;

wherein said first domain name server automatically updates its domain name data responsive to receiving said request by associating said IP address generated by said automatically generating step with said Internet domain name for said host node.

17. The computer program product of claim 16, wherein said instruction further cause said host node to perform the step of:

automatically discovering the identity of said first domain name server from a response to at least one query generated by said host node and transmitted to at least one other node.

18. The computer program product of claim 17, wherein said step of automatically discovering the identity of said first domain name server comprises:

automatically determining the identity of a local domain name server, said local domain name server being attached to a local network to which said host node is attached; and

automatically obtaining the identity of said first domain name server from said local domain name server.

19. The computer program product of claim 16, wherein said step of automatically generating an IP address for said host node comprises the steps of:

automatically generating a link-local address for said host node recognizable on a local link, said automatically generating a link-local address being performed by said host node;

automatically soliciting information from a router connected to said local link;

receiving information in said host node from said router responsive to said automatically soliciting step, said information including a portion of an IP address for said host node; and

automatically constructing said IP address from said portion of an IP address received from said router and said link-local address, said automatically constructing step being performed by said host node.

20. The computer program product of claim 16, wherein said step of receiving data defining an Internet domain name for said host node comprises:

automatically obtaining a zone common portion of said Internet domain name from a domain name server, said zone common portion being common to a plurality of nodes within an Internet zone;

defining a zone unique portion of said Internet domain name, said zone unique portion being unique to said host node within said Internet zone; and

combining said zone unique portion with said zone common portion.

21. The computer program product of claim 16, wherein said step of automatically transmitting a request to update domain name data comprises encrypting at least a portion of said request according to a public/private key encryption algorithm using a public key for said first domain name server.

22. The computer program product of claim 21,

wherein said step of automatically transmitting a request to update domain name data comprises automatically generating a requestor identifier at said host node, said requestor identifier being unique to said host node, and encrypting said requester identifier with said request to update domain name data;

and

wherein said first domain name server automatically verifies said requestor identifier, and updating domain name data only if said requester identifier is successfully verified.

23. The computer program product of claim 16, wherein said step of automatically transmitting a request to update domain name data comprises generating a request according to one of the set consisting of:

a BIND 8 protocol, a BIND 9 protocol, and a subsequent version of a BIND protocol.

24. A computer system coupled to the Internet and forming a host node of the Internet, comprising:

an Internet interface;

at least one processor;

an Internet access utility executable on said at least one processor which self-configures said host node to a first domain name server maintaining domain name data for a plurality of nodes including said host node, said Internet access utility automatically generating an IP address of a said host node, and automatically transmitting a request to update domain name data relating to said host node to said first domain name server, said domain name data residing in said first domain name server, said request including said IP address.

25. The computer system of claim 24, wherein said Internet access utility further automatically discovers the identity of said first domain name server from a response to at least one query generated by said host node and transmitted to at least one other node.

26. The computer system of claim 25, wherein said Internet access utility automatically discovers the identity of said first domain name server by:

automatically determining the identity of a local domain name server, said local domain name server being attached to a local network to which said host node is attached; and

automatically obtaining the identity of said first domain name server from said local domain name server.

27. The computer system of claim 24, wherein said Internet access utility automatically generates an IP address for said host node by:

automatically generating a link-local address for said host node recognizable on a local link;

automatically soliciting information from a router connected to said local link;

receiving information in said host node from said router responsive to said automatically soliciting step, said information including a portion of said IP address for said host node; and

automatically constructing said IP address from said portion of said IP address received from said router and said link-local address.

28. The computer system of claim 27, wherein said Internet access utility further generates an IP address for said host node by:

automatically verifying the uniqueness of said link-local address on said local link.

29. The computer system of claim 24, wherein said Internet access utility determines an Internet domain name for said host node by:

automatically obtaining a zone common portion of said Internet domain name from a domain name server, said zone common portion being common to a plurality of nodes within an Internet zone;

defining a zone unique portion of said Internet domain name, said zone unique portion being unique to said host node within said Internet zone; and

combining said zone unique portion with said zone common portion.

30. The computer system of claim 24, wherein said Internet access utility automatically encrypts at least a portion of said request to update domain name data according to a public/private key encryption algorithm using a public key for said first domain name server.

31. The computer system of claim 30, wherein said Internet access utility automatically generates a requester identifier at said host node, said requestor identifier being unique to said host node, and encrypts said requester identifier with said request to update domain name data, and wherein said first domain name server automatically verifies said requester identifier, and updates domain name data only if said requestor identifier is successfully verified.

32. The computer system of claim 24, wherein said Internet access utility generates said request to update domain name data according to one of the set consisting of:

a BIND 8 protocol, a BIND 9 protocol, and a subsequent version of a BIND protocol.

33. An apparatus which maintains Internet domain name data, comprising:

a plurality of host nodes connected to the Internet;

a first domain name server connected to the Internet, said first domain name server maintaining domain name data for an Internet zone, said zone including said plurality of host nodes;

a respective Internet access mechanism in each of said plurality of host nodes, each said Internet access mechanism generating one or more IP addresses for its host node and automatically transmitting a request to update said domain name data for an Internet zone in said first domain name server from its host node to said first domain name server, the request including an IP address generated by the requesting host node and a domain name of the requesting host node; and

a domain name database mechanism in said first domain name server, said domain name database mechanism responding to a request to update said domain name data received from one of said plurality of host nodes by automatically updating said domain name data, said domain name data being updated by associating the IP address contained in the request with the domain name of the requesting host node.

34. The apparatus of claim 33, further comprising:

a router connected to the Internet; and

a local area network connected to said router;

wherein at least some of said plurality of host nodes are coupled to said local area network and communicate with at least some other Internet nodes through said router.

35. The apparatus of claim 34, wherein each said Internet access mechanism generates an IP address for its host node by:

automatically generating a link-local address for said host node recognizable on said local area network;

automatically soliciting information from said router;

receiving information in said host node from said router responsive to said automatically soliciting step, said information including a portion of said IP address for said host node; and

automatically constructing said IP address from said portion of said IP address received from said router and said link-local address.

36. The apparatus of claim 34, further comprising:

a local domain name server coupled to said local area network.

37. The apparatus of claim 36, wherein each said Internet access mechanism automatically discovers the identity of said first domain name server by:

automatically determining the identity of said local domain name server; and

automatically obtaining the identity of said first domain name server from said local domain name server.

38. The apparatus of claim 33, wherein each said Internet access mechanism encrypts at least a portion of said request to update domain name data according to a public/private key encryption algorithm using a public key for said first domain name server.

39. The apparatus of claim 38,

wherein each said Internet access mechanism encrypts a requester identifier with said request to update domain name data;

and

wherein said domain name database mechanism verifies said requester identifier, and updates said domain name data only if said requestor identifier is successfully verified.

40. The apparatus of claim 33, wherein each said Internet access mechanism generates said request to update domain name data according to one of the set consisting of:

a BIND 8 protocol, a BIND 9 protocol, and a subsequent version of a BIND protocol.

41. A domain name server computer system for servicing Internet domain name requests, comprising:

a connection to the Internet;

a domain name database, said domain name database containing a plurality of domain name records for an Internet zone, said Internet zone including a plurality of nodes attached to the Internet, each record associating an Internet domain name of a respective node in said zone with at least one IP address of the respective node; and

a database server which responds to database requests received by said domain name server computer system over the Internet;

wherein said database requests include auto domain name update requests, each said auto domain name update request being a request from a host node connected to the Internet to update domain name database data relating to the requesting host node, each said auto domain name update request containing an IP address generated by the requesting host node and a domain name of the requesting host node;

wherein said database server responds to a said auto domain name update request by automatically updating said domain name database to associate the IP address contained in the request with the domain name of the requesting host node.

42. The domain name server of claim 41, wherein at least a portion of each said auto domain name update request is encrypted according to a public/private key encryption algorithm using a public key of said domain name server, and said domain name server further comprises a decryption mechanism for decrypting each said request using a private key.

43. The domain name server of claim 42,

wherein each said auto domain name update request includes an encrypted requester identifier;

and

wherein said database server verifies said requestor identifier, and updates said domain name database responsive to the request only if said requestor identifier is successfully verified.

44. The domain name server of claim 43,

wherein each said auto domain name update request includes a first requester identifier generated by the requesting host node, said first requestor identifier being unique to the requesting host node;

and

wherein said database server verifies the requestor identifier by;

(a) if the domain name in the request is a new domain name, then generating a new domain name record for said domain name in said domain name database and saving said first requestor identifier with said new domain name record; and

(b) if the domain name in the request is not a new domain name, then comparing a second requestor identifier, said second requestor identifier being saved in a domain name record associated with said domain name in said domain name database, with said first requester identifier, and verifying the requester identifier only if the first and second requester identifiers are identical.