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IBM Personal Communications and IBM z/OS TTLS Enablement: Technical Enablement Series

An IBM Redpaper publication


Published on 23 May 2019, updated 12 July 2019

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ISBN-10: 0738457744
ISBN-13: 9780738457741
IBM Form #: REDP-5538-00

Authors: Chris Wagner Van

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    The purpose of this document is to complete the task of introducing Transport Layer Security to z/OS® so IBM Personal Communications (PCOMM) uses TLS security.

    This document walks you through enabling Tunneled Transport Layer Security (TTLS) on your IBM z/OS for use with a PCOMM TN3270 connection. When you complete this task, you require a certificate to access your TN3270 PCOMM session.

    You work with the following products and components:

    • TN3270
    • TCPIP
    • PAGENT
    • INET (maybe)
    • IBM RACF®

    This document assumes that the reader has extensive knowledge of z/OS security administration and these products and components.

    This document is part of the Technical Enablement Series that was created at the IBM Client Experience Centers.

    Table of Contents



    Install and configure PAGENT

    Rings, certificates, and certificate authorities

    Modify TCPIP

    Updating TN3270 to use the secure port

    Using PCOMM TLSv1.2 to connect

    Turn off the TN3270 non-TLS port

    Verify TLS-Enabled PCOMM



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