Overview

You want to enforce the highest level of TLS only and disable all weaker SSL and TLS versions and want to know if ListManager can operate with just TLS 1.3.

Information

For HTTPS web traffic, ListManager 12.4.11 supports TLS 1.3 natively. In standard deployments, you no longer need an external NGINX reverse proxy solely to operate with modern TLS protocols.

If you plan to run a TLS 1.3-only HTTPS configuration, validate your certificates, client compatibility, and any existing proxy settings as part of upgrade planning.