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HostExplorer - Stunnel - MochaSoft - Brown

The mainframe computer used for campus central administrative processing only accepts SSL-encrypted TN3270s connections to, port 992. Please use one of the following options to establish secure TN3270s connections to the mainframe. Installation instructions can be found in the below install video and ReadMe instructions. 

Note: With the exception of Brown tn3270, these products, along with OASIS, DEBUG and Test Machine, can only be downloaded from within the domain or while connected to VPN.

Windows Systems (Windows 7, Windows 8.1, and Windows 10)

Install OptionsDetails

Hummingbird HostExplorer (OpenText HE 15 - UCLA only)

IT Services has purchased and maintains a HostExplorer site license for UCLA and its affiliates. A UCLA logon ID and email address will be required. Download the complete folder for best results.


Stunnel is available for those legacy systems that require SSL/TLS capability.

Mocha W32 TN3270

Mocha W32 TN3270 is a small and fast TN3270 emulator for Windows. IT Services has purchased a Mocha W32 TN3270 site license for UCLA. (Note: This option requires Stunnel to establish secure connections to IT Services.)

Macintosh Systems (Mac OS X 10.14 and Earlier)

Install OptionsDetails
Brown tn3720

Download and configuration directions for Brown tn3270

Macintosh Systems (Mac OS X 10.15 and Later)

Install OptionsDetails

Download and configuration directions for IBM-HOD (Host on Demand)

For assistance configuring your connection, contact:

IT Services Support Center
email: | (310) 267-HELP (4357)