Any new controller requires an insecure platform connection for initial access. However, once it is converted to an N4 controller, TLS platform connections are always supported. This even applies if, at some future point, an N4 clean distribution file is installed.

In Niagara 4, any use of the term “SSL” always refers to the TLS (Transport Layer Security) protocol, supporting TLS versions 1.0, 1.1. and 1.2. See the Niagara Station Security Guide for complete details on related secure communication tasks and concepts.