Windows Server 2016 Administration Cookbook

Changing the port on which your website runs

Normally, whenever you access a website, it is running on port 80 or 443. Any normal HTTP request travels over port 80, and the encrypted HTTPS uses port 443. Inside IIS, it is very easy to change the port that a website is listening on if you need to do so. Probably the most common reason to institute a port change on a website is to keep it hidden. Maybe you have an administrative site of some kind and want to make sure that nobody stumbles across it, or perhaps your web server is limited on IP addresses, and you need to turn on another web page but all of your IPs are already running sites. You could utilize a different port for the new site and then have the opportunity to run two (or more) ...