i have set up a web site on linux server. I want to know that is there any way to set multiple domain on same IP using different PORT? so that I can manage multiple sites on same server(i.e same IP).
You can make Apache2 (if you are using Apache2) listen on multiple ports and use vhosts and redirects to put up a site per port.
However, you can also easily manage many websites on one port number and also use vhosts to redirect to these websites.
An example of a vhost can be: