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How to Install Software for TN3270 on Windows

Follow these steps to install software for TN3270 on Windows Vista and above (32 & 64 bit).

Note: The only Windows versions of TN3270 that will work beginning December 17, 2017 are version 2.5 or above (using the newer TLS 1.0 to connect to campus core systems IFIS, ISIS, PPS, etc.). 

You will need local administrative rights on your machine to install TN3270. A VPN connection is required for mainframe access.

Follow the steps below to install software for TN3270 on Windows.

1. Download the file

  • From a UC San Diego computer or using the VPN, download the Mocha TN3270 (v2.8) file.

2. Run the exe file

  • When prompted, click Run
    • Depending on which Windows version you are using, you may have to go to the location you saved the file to and doulble-click the installer from there.
  • Use the default installation location
  • Click Next and Install as requested
  • Click Finish when prompted

3. Setup and connect

  • Click on Start then Programs
  • Select Mocha TN3270 to open Mocha TN3270
  • Click on File then Edit/New Session...
  • Enter hubble in the Name field
  • Enter in the IBM Mainframe IP Address: field
  • Enter 1023 in the Port number: field
  • Check mark SSL
  • Click Apply to save changes
  • Click Connect to access the mainframe
For more information, contact the ITS Service Desk, (858) 246-4357 or ext. 6-HELP.