How to remove port number from http://localhost:8123 to use as http://localhost? [closed]
The only way to do this is to change back to 80, or to install a listener on port 80 (like a proxy) that redirects all your traffic to port 8123.
When you enter a server name without a port, port 80 is assumed by default. AFAIK, there is no way to change this behaviour without changing your browser's source code.
The hosts file does not support the kind of redirection you are trying to do. The rules simply fail.
Edit: ah, it might be possible to change the default port in some browsers. Here's an article in MozillaZine for Firefox.