Refer to the exhibit.

Based on theexhibit below, if ‘Insecure’ is selected as part of the HTTP Listener configuration, the HTTP listener will only accept HTTP requests. This means that no TLS context will be configured for this listener and no encryption or authentication will be appliedto incoming requests. The protocol attribute of this listener will be set to HTTP instead of HTTPS. References:https://docs.mulesoft.com/http-connector/1.6/http-liste ner-ref#insecure