1. On the server hosting the Web UI and RESTful API websites run the IIS Manager by accessing
Administrative tools > Internet Information Services (IIS) Manager. Other ways of accessing IIS Manager are shown
here.
2. Select a website that requires port change:

3. In the pane on the right in the
Edit Site section click
Bindings.
4. In the pop up window, select a binding and click
Edit:

5. Set the new port and
Save: