By default, Qlik Sense installed with SSL and your Sense Admin should explicitly enable http connection.
For more details take a look into Configuring Proxy section and here.
Just configure your network for https://whatever.address.domain/ to connect to qliksense.server.domain:443.
Install SSL personal certificate on the node where proxy service is running, as well as add certificate(s) for Trusted Authorities.
Btw, during the installation you had to be asked for address you'd like to use as a entry point - computer name is default setting.
If you're using QlikSense out of the box - you shouldn't touch its web server
Hope it helps.