Accessing the web server using 'localhost' in the URL

Q. I cannot connect to the InterMapper web server running on my computer when I use "localhost" as the address in the URL (http://localhost:80). The browser displays an "Access Denied" message.

However, I can connect to the server when I use the computer's IP address (http://192.168.1.100:80) or IPv4 localhost address (http://127.0.0.1:80) in the URL.

A. Some web browsers will treat "localhost" as the IPv6 loopback address ::1. If you were to use http://::1:80, this would also fail. In this situation, you need to use either the actual IP address or localhost address in the URL for the web server.