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Multi-Factor Authentication (MFA) support in IBM Explorer for z/OS and IBM Developer for z Systems

Product Documentation


This document describes basic requirements and expected behaviors under the MFA support in IBM Explorer for z/OS and IDz.


IBM Explorer for z/OS (z/OS Explorer) added support for Multi-Factor Authentication (MFA) in September 2017.

  • v3.0.1.13 PTF UI50538
  • v3.1.1.1 PTF UI51053

This information documents basic requirements and expected behaviors:
  • MFA must be configured to allow for Passticket usage after initial authentication.
  • Passtickets will be used during the whole lifetime of a user session, so the window in which Passtickets are accepted after initial authentication should be big enough to cover a typical workday, and must be at least long enough to cover the logon process.
  • Once Passticket usage fails, the client connection will be severed and the user must re-logon (and thus re-authenticate). This behavior is similar to users being disconnected due to inactivity time-out.
  • If MFA is set up to prompt for a second authentication, it will show to the user as though the first authentication failed, even if it was successful.

IBM Developer for z Systems (IDz) relies on z/OS Explorer for authentication, and is therefore able to support MFA without additional requirements, except the requirement for a z/OS Explorer service level that supports MFA.

Original Publication Date

15 June 2018

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Document Information

Modified date:
02 August 2018