can I have ssl listen on 443 and 8443?

noob question no doubt. but several packages I use seem to redirect to an internal url with :8443 on the end for secure rather than the 443 default. Just wondering if there's a config file or something I can alter so Apache will listen on both ports and take the necessary action.

Sure.  https://www.groovypost.com/howto/apache/configure-apache-web-site-to-use-multiple-ports/

Best way to accomplish would to create a new template from your desired template type with the new directives.