Integration Server 10.3 | Integration Server Administrator's Guide | Configuring Ports | Considerations for Adding Ports
 
Considerations for Adding Ports
 
Reasons to Add Additional Ports
Considerations for Configuring Ports
You can configure one or more additional ports. You can associate an HTTP, HTTPS, FTP, FTPS, e-mail, or file polling protocol with the additional ports.
Important:
If you are running multiple Integration Server instances on the same host machine, the ports on each server must have a unique port number.