Apparatus and method for providing remote users with the same unique IP address upon each network access

• US 5,598,536 A
• Filed: 08/09/1994
• Issued: 01/28/1997
• Est. Priority Date: 08/09/1994
• Status: Expired due to Term

• Current Assignee: Dialogic, Inc. (Enghouse Systems Limited)
• Original Assignee: Shiva Corp. (Intel Corporation)
• Inventors: Gocht, Russell C., McCool, David, Slaughter, III, Frank G.
• Primary Examiner(s): Lim, Krisna
• Application Number:
  US08/287,775
• Time in Patent Office: 903 Days
• Field of Search: 395/200.09, 395/200.06, 395/200.15, 395/200.16
• US Class Current: 709/219
• CPC Class Codes: H04L 9/40 Network security protocols

Abstract

A remote access server provides a remote user with access to a local computer network. The server receives a user identification string from its communication port, the string having been entered by the remote user at a remote computer which is coupled to the communication port. The string identifies the remote user. The server uses the string to access a database and determine an internet protocol (IP) address associated with the string. The remote computer needs the IP address to communicate on the local computer network. The database includes a user identification string for each remote user and an IP address for each string. The remote access server sends the IP address to the remote computer via the communication port. The server then allows the remote computer to access the local computer network and to communicate on the local computer network using the IP address.

Claims

1. A method for providing a remote user with access to a computer network, comprising:

receiving a user identification string from a communication port, the string having been entered by the remote user at a remote computer which is coupled to the communication port, the string uniquely identifying the remote user;

using the user identification string to access a database and retrieve a unique internet protocol (IP) address associated with the user identification string, the remote computer needing the IP address to communicate on the computer network, the database including a unique user identification string for each remote user and a unique IP address for each user identification string such that the same unique IP address is retrieved every time a particular remote user enters the user identification string uniquely identifying that remote user;

sending the IP address to the remote computer via the communication port; and

allowing the remote computer to access the computer network and to communicate on the computer network using the IP address.

2. The method of claim 1 further comprising maintaining the database.

3. The method of claim 1 further comprising coupling a communication device to the communication port for communicating with the remote computer.

4. The method of claim 3 wherein the communication port is a serial port.

5. The method of claim 4 wherein the communication 2 device is a modem.

6. A method for providing a remote user with access to a computer network, comprising:

providing a communication port to provide for communication with a remote computer;

coupling a network port to the computer network to provide for communication with the computer network, the remote computer needing an internet protocol (IP) address to communicate on the computer network;

receiving from the communication port a user identification string which was entered by the remote user at the remote computer and which uniquely identifies the remote user;

using the unique user identification string to access a database and retrieve a unique IP address associated with the user identification string, the database including a unique user identification string for each remote user and a unique IP address for each user identification string such that the same unique IP address is retrieved every time a particular remote user enters the user identification string uniquely identifying that remote user;

sending the IP address to the remote computer via the communication port; and

allowing the remote computer to access the computer network and to communicate on the computer network using the IP address.

7. The method of claim 6 further comprising coupling a plurality of communication ports such that a plurality of remote computers are provided simultaneous access to the local computer network after each remote computer is sent an IP address.

8. The method of claim 6 further comprising maintaining the database.

9. The method of claim 6 further comprising coupling a communication device to the communication port for communicating with the remote computer.

10. The method of claim 9 wherein the communication port is a serial port.

11. The method of claim 10 wherein the communication device is a modem.

12. A server for providing a remote user with access to a computer network, comprising:

at least one communication port to provide for communication with a remote computer;

at least one network port for coupling to the computer network to provide for communication with the computer network, the remote computer needing an internet protocol (IP) address to communicate on the computer network; and

processing electronics for;

controlling the communication port and the network port,

receiving from the communication port a user identification string which was entered by the remote user at the remote computer and which uniquely identifies the remote user,

using the user identification string to access a database and retrieve a unique IP address associated with the user identification string, the database including a unique user identification string for each remote user and a unique IP address for each user identification string such that the same unique IP address is retrieved every time a particular remote user enters the user identification string uniquely identifying that remote user,

sending the IP address to the remote computer via the communication port, and

allowing the remote computer to access the computer network through the server and to communicate on the computer network using the IP address.

13. The server of claim 12 further comprising a plurality of communication ports such that a plurality of remote computers are provided simultaneous access to the local computer network through the server after each remote computer is sent an IP address.

14. The server of claim 12 wherein the processing electronics includes a microprocessor and memory.

15. The server of claim 12 wherein the database is maintained internally by the server.

16. The server of claim 12 wherein the database is maintained on the local computer network and external from the server.

17. The server of claim 12 further comprising a communication device coupled to the communication port for communicating with the remote computer.

18. The server of claim 17 wherein the communication port is a serial port.

19. The server of claim 18 wherein the communication device is a modem.