Assuming you're accessing the demos on the local PC, you can use the HOSTS file to map dummy domain names to the loopback address.
Run notepad as administrator, and open
C:\Windows\System32\drivers\etc\hosts
- the file has no extension, so you'll need to select "all files" in the file-type dropdown.
Go to the end of the file, and enter a mapping followed by a blank line. For example:
127.0.0.1 demo1.local
This will map the name
demo1.local
to your computer, but only when accessed from your computer.
Then, in IIS Manager, edit the binding for your site, leave the default port, and set the "Host name" to
demo1.local
.
You will then be able to access that site using
http://demo1.local
- but only on your local PC.