GDDR: How to Configure Secure TCP/IP Connections Using AT-TLS
Summary: Geographically Dispersed Disaster Restarts (GDDR) supports secure Transmission Control Protocol Internet Protocol (TCP/IP) connections using Application Transparent Transport Layer Security (AT-TLS) for secure communications. ...
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Instructions
Yes, GDDR can be configured to use secure TCP/IP communications using AT-TLS. There are no changes required or impact to GDDR.
Application Transparent Transport Layer Security (AT-TLS) consolidates TLS implementation for z/OS-based applications in one location. This allows all applications to support TLS-based encryption without knowledge of the TLS protocol. For more information about AT-TLS, see the IBM manual, z/OS Communications Server IP Configuration Guide (SC31-8775).
Chapter 8, AT-TLS Configuration on the mainframe, of the Dell DLM DLMAUT/GDDR Tape Service Guide V5.0, has instructions on setting up AT-TLS, PAGENT, and TCPIP. Information is also given on how to add any RACF profiles, digital certificates, and keyrings if these are required. See the attached document.
Affected Products
Geographically Dispersed Disaster Restart (GDDR)Products
Geographically Dispersed Disaster Restart (GDDR)Article Properties
Article Number: 000011259
Article Type: How To
Last Modified: 05 Mar 2025
Version: 3
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