locked
Windows 7 and Telnet RRS feed

  • Question

  • We use a Windows program that commincates to our Unix server via Telnet. Some of our in house Unix servers use a high telnet port, i.e 9001 as the telnet port. When I change the port fron 23 to 9001 in our Windows program it will not connect to the Unix server. If I change it to 23 on both machines, it works. I tried turning on the Telnet features in "Programs and Features" and this did not help. Our program works with Vista and Xp with high Telnet ports. Any ideas?

    Tuesday, July 21, 2009 6:32 PM

Answers

  • We identified the problem. It was an issue with the unix firewall settings. Thanks for all of your ideas. Levon.

    • Marked as answer by Dale Qiao Friday, July 24, 2009 12:56 AM
    Thursday, July 23, 2009 6:04 PM

All replies

  • ComptronData,

    So, if i am correct you try to connect to some unix servers who run a telnet service on port 9001, Right?
    Well did you try to run your telnet client with the following parameters.

    Telnet Hostname Portname

    in your case if the hostname of your unix server is unixbox.
    You can connect to it this way.

    Telnet unixbox 9001

    Does this resolve your issue?

    Kind Regards
    DFT
    IM me - TWiTTer: @DFTER
    • Proposed as answer by daft Wednesday, July 22, 2009 6:29 AM
    Wednesday, July 22, 2009 6:29 AM
  • Thanks for the reply. From the command line, I type in: telnet 192.168.1.100 9001 and the connection is refused. I can ping the ip address just fine. We have a second Unix box. From the command line, I can type in: telnet 192.168.1.30 23 and the connection is established. If I repeat these steps in Vista Business it works on both servers. Thanks for your help. Levon.
    Wednesday, July 22, 2009 6:12 PM
  • Did you try to disable the firewalls that are active on your machine?


    IM me - TWiTTer: @DFTER
    • Proposed as answer by daft Wednesday, July 22, 2009 6:24 PM
    Wednesday, July 22, 2009 6:24 PM
  • I turned off Windows Firewall and still the same results. The telnet program is listed as an exception in the firewall settings.
    Wednesday, July 22, 2009 7:02 PM
  • Are the unixboxes in the same network segment?
    Is there a firewall on your network that blocked these ports?


    IM me - TWiTTer: @DFTER
    Wednesday, July 22, 2009 11:22 PM
  • We identified the problem. It was an issue with the unix firewall settings. Thanks for all of your ideas. Levon.

    • Marked as answer by Dale Qiao Friday, July 24, 2009 12:56 AM
    Thursday, July 23, 2009 6:04 PM