n is a valid port number. The default is 52773.
WebServerPort is the port number to use for the Web server. If you set this number to 0, the Web Server is disabled. A standard InterSystems IRIS® data platform installation sets the Web server port number to the first unused port number greater than or equal to 52773. The Web server runs on the same system as the InterSystems IRIS server.
Changing This Parameter
On the Startup page of the Management Portal (System Administration > Configuration > Additional Settings > Startup), in the WebServerPort row, select Edit. Enter a port number.
Instead of using the Management Portal, you can change WebServerPort in the Config.StartupOpens in a new tab class (as described in the class reference) or by editing the CPF in a text editor (as described in the Editing the Active CPF section of the “Introduction to the Configuration Parameter File” chapter in this book).