I have a subdomain such as manage.example that I use exclusively for ISPConfig management. I'd like to use either URL: http://manage.example.com (to always forward to https://manage.example.com) https://manage.example.com (to always redirect to the ISPConfig port) I've read posts for redirecting Apache to another port, but I'm wondering if there is a way in which I can use a dedicated subdomain URL for ISPConfig management without specifying a Port. I did try installing ISPConfig and specifying 443 as the port; however, when going to the URL https://manage.example.com it seemed that LetsEncrypt encryption wasn't working: the browser indicated the page was insecure. When I installed using port 9876 with https://manage.example.com:9876, that did work. But, for people using the control panel, it is a bit of a headache to have them use a port as part of the URL. I'm sure many folks would love to know how to use a dedicated subdomain URL for accessing the ISPConfig control panel. Can anyone provide instructions on how to properly do this with ISPConfig?