System and method for dynamic creation and management of virtual subdomain addresses

• US 6,442,602 B1
• Filed: 12/31/1999
• Issued: 08/27/2002
• Est. Priority Date: 06/14/1999
• Status: Expired due to Term

• Current Assignee: Web And Net Computing
• Original Assignee: Web And Net Computing
• Inventors: Choudhry, Azkar Hussain
• Primary Examiner(s): Sheikh, Ayaz
• Assistant Examiner(s): DINH, KHANH Q
• Application Number:
  US09/476,632
• Time in Patent Office: 970 Days
• Field of Search: 709/105, 709/218, 709/220, 709/224, 709/227, 709/225, 709/226, 709/222, 709/232, 370/252, 370/103
• US Class Current: 709/218
• CPC Class Codes: H04L 61/30 Managing network names, e.g. use of aliases or nicknames name-to-address mapping H04L61/45
• CPC Class Codes: H04L 61/302 Administrative registration, e.g. for domain names at internet corporation for assigned names and numbers [ICANN]
• CPC Class Codes: H04L 61/4511 using domain name system [DNS]
• CPC Class Codes: H04L 67/14 Session management for real-time applications in data packet communications networks H04L65/1066
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: H04L 9/40 Network security protocols

Abstract

An Internet domain name server platform which intercepts web browser HTTP queries to unrecognized, unregistered subdomain name and provides redirection of the query to a recognized and registered domain name or a subdirectory of a recognized and registered domain name. A server script is launched in response to the event of the request to an unrecognized subdomain name, which dynamically resolves the unknown address rather than returning a standard “Error 404: File Not Found” message to the requesting web browser. The script accesses a database of virtual subdomain names which are mapped in the database to actual subdirectories on the same or a remote server. For example, if a query to http://www.virtualsubdomain.domain.com is received, and virtualsubdomain.domain.com is not recognized as a registered domain name by the standard DNS server, the script will resolve it and map it to http://www.domain.com/subdomain, or any other file on a web server which is actually registered. Using this method, the creation of a virtual subdomain requires only the steps necessary to create a subdirectory. This enables it to be performed rapidly if handled manually, or it can be created automatically by any network client with privileges to create subdirectories on the web server in question.

Claims

1. A method for redirecting an Internet subdomain address request to a virtual subdomain on an Internet domain name server, comprising the steps of:

receiving from an Internetworked client computer a request for an Internet document at an unrecognized unregistered subdomain address;

executing a redirection script on said domain name server in response to said request for said unrecognized unregistered subdomain address;

accessing a computer-readable record by said script to determine a subdirectory or recognized and registered domain name assigned to said unrecognized unregistered subdomain; and

redirecting said request to said subdirectory or recognized and registered domain name such that said request results in a request to a recognized domain name or to a subdirectory of a recognized domain name on a web server, thereby allowing the request to be fulfilled by said web server which hosts the recognized domain name or subdirectory of the recognized subdomain name.

2. A method for redirecting an Internet subdomain address request to a virtual subdomain on an Internet domain name server as set forth in claim 1, wherein said step of accessing a computer readable record further comprises accessing a computer database.

3. A method for redirecting an Internet subdomain address request to a virtual subdomain on an Internet domain name server as set forth in claim 1 further comprising the step of providing an entry in a routing table for a domain name server, said entry allowing a range of addresses to be handled by said domain name server thereby allowing redirection of a range of unrecognized subdomain names by a domain name server.

4. A method for redirecting an Internet subdomain address request to a virtual subdomain on an Internet domain name server as set forth in claim 1 wherein said step of executing a redirection script further comprises executing a redirection script by intercepting a “

File not found”

error on a domain name server.

5. An Internet virtual subdomain name server for providing Internet address management for unregistered and unrecognized subdomains, said virtual subdomain name server comprising:

an Internet domain name server computer platform including a central processor unit capable of executing software, an operating system executed by said central processor unit and managing a plurality of multiple applications and tasks simultaneously, a computer network interface communicable to an Internet allowing said applications and tasks to send and receive hyper text transfer protocol messages, a domain server software suite application which is executed by said central process unit under the control of said operating system and providing for event-based execution of scripts, and a computer-readable record storage means accessible by said applications, scripts and tasks;

at least one computer-readable record disposed in said computer-readable record storage means, said computer-readable record providing an association of a virtual subdomain address to a real address; and

a redirection script executable by said central processor unit, said redirection script'"'"'s execution being invoked by said domain server software suite upon the event of receipt of a virtual subdomain address document request such that the redirection script accesses the computer-readable record, and said script redirects said request to said real address.

6. An Internet virtual subdomain name server for providing Internet address management for unregistered and unrecognized subdomains as set forth in claim 5 wherein said real address comprises a recognized and registered domain name.

7. An Internet virtual subdomain name server for providing Internet address management for unregistered and unrecognized subdomains as set forth in claim 5 wherein said real address comprises a subdirectory of a recognized and registered domain name.

8. An Internet virtual subdomain name server for providing Internet address management for unregistered and unrecognized subdomains as set forth in claim 5 wherein said domain server software suite further comprises an Apache Hyper Text Transfer Protocol Server suite.

9. An Internet virtual subdomain name server for providing Internet address management for unregistered and unrecognized subdomains as set forth in claim 8 wherein said redirection script comprises a Personal Home Page (“

PHF”

) script.

10. An Internet virtual subdomain name server for providing Internet address management for unregistered and unrecognized subdomains as set forth in claim 5 wherein said central processor unit comprises an IBM-compatible personal computer system.

11. An Internet virtual subdomain name server for providing Internet address management for unregistered and unrecognized subdomains as set forth in claim 5 wherein said central processor unit comprises the Linux operating system.

12. An Internet virtual subdomain name server for providing Internet address management for unregistered and unrecognized subdomains as set forth in claim 5 wherein said computer-readable record comprises a computer-readable database.