System and method for communicating client IP addresses to server applications

• US 6,529,937 B1
• Filed: 01/29/1999
• Issued: 03/04/2003
• Est. Priority Date: 01/29/1999
• Status: Expired due to Fees

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Murphy, Thomas E. Jr., Stevens, Jeffrey S., Orzel, Francine M., Rieth, Paul F.
• Primary Examiner(s): Sheikh, Ayaz
• Assistant Examiner(s): Jean, Frantz B.
• Application Number:
  US09/240,482
• Time in Patent Office: 1,495 Days
• Field of Search: 709/203, 709/227, 709/228, 709/229, 709/220, 709/217, 709/218, 709/219, 713/182, 713/201
• US Class Current: 709/203
• CPC Class Codes: H04L 67/01 Protocols
• CPC Class Codes: H04L 67/08 specially adapted for terminal emulation, e.g. Telnet
• CPC Class Codes: H04L 67/14 Session management for real-time applications in data packet communications networks H04L65/1066
• CPC Class Codes: H04L 69/24 Negotiation of communication capabilities
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: H04L 9/40 Network security protocols

Abstract

A client IP address is communicated to server applications in a secure Telnet client/server system. During a client/server session, the terminal type is first negotiated, followed by negotiation of environment options, including requesting and receiving the client IP address. Upon creating a virtual device for the session, the client address in stored in device associated space in sockaddr_in format where it becomes available to the server applications through the QDCDEVD API.

Claims

1. A method for communicating client IP address to server applications in a Telnet client/server system characterized by a network of firewalls, sockets, sock servers and secure SSL connections, comprising the steps of:

upon completion of secure connection handshake, during a client/server session, negotiating terminal type;

negotiating environment options, including requesting and receiving said client IP address; and

creating a virtual device for said session, including storing said client IP address in device associated space;

thereby assuring that a correct client IP address is received at said server across said network.

2. A method for making available a client IP address to server applications in a Telnet client/server system utilizing secure connections, said system characterized by a network of firewalls, sockets, sock servers and secure SSL connections, comprising the steps, executed during a client/server session at said server, of:

upon completion of secure connection handshake, bundling for communication to said client a request to

engage in terminal type and environment option negotiations;

prior to completing a full set of negotiations required for transparent mode, engaging in environment option negotiations;

during said environment option negotiations, requesting and receiving said client IP address; and

creating a virtual device associated with said session, including storing in device associated space said client IP address;

thereby assuring that a correct client IP address is received at said server across said network.

3. System for making available a client IP address to server applications in a secure Telnet client/server system characterized by a network of firewalls, sockets, sock servers and secure SSL connections, comprising:

a first server code object for bundling for communication to said client a request to engage in terminal type and environment option negotiations, upon completion of secure connection handshake;

a second server code object for engaging in environment option negotiations prior to completing a full set of negotiations required for transparent mode;

a third server code object for requesting and receiving, during said environment option negotiations, said client IP address; and

a forth server code object for creating a virtual device associated with said session, including said client IP address in device associated space;

thereby assuring that a correct client IP address is received at said server across said network.

4. A program storage device readable by a machine, tangibly embodying a program of instructions executable by a machine to perform method steps for making available a client IP address to server applications in a secure Telnet client/server system characterized by a network of firewalls, sockets, sock servers and secure SSL connections, said method steps comprising:

bundling for communication to said client a request to engage in terminal type and environment option negotiations upon completion of secure connection handshake;

prior to completing a full set of negotiations required for transparent mode, engaging in environment option negotiations;

during said environment option negotiations, requesting and receiving said client IP address; and

creating a virtual device associated with said session, including storing in device associated space said client IP address;

thereby assuring that a correct client IP address is received at said server across said network.

5. An article of manufacture comprising:

a computer useable medium having computer readable program code means embodied therein for making available a client IP address to server applications in a secure Telnet client/server system characterized by a network of firewalls, sockets, sock servers and secure SSL connections, the computer readable program means in said article of manufacture comprising;

computer readable program code means for causing a computer to effect bundling for communication to said client a request to engage in terminal type and environment option negotiations;

prior to completing a full set of negotiations required for transparent mode, engaging in environment option negotiations;

during said environment option negotiations, requesting and receiving said client IP address; and

creating a virtual device associated with said session, including storing in device associated space said client IP address;

thereby assuring that a correct client IP address is received at said server across said network.