Analytics Plus is installed by default on port 8443 (Unless changed during installation). It also uses port 8200 by default for its internal authentication purpose. Now if you wish to change the authentication port 8200 to any other port number, please find the steps below.
Stop the Analytics Plus services (using Services.msc)
Open the <Analytics Plus home>\conf\port.properties file using Wordpad
Look for the entry 'iam.https.port=8200'
Change the port number 8200 to your desired port (Ex: iam.https.port=443)
Save the file
Launch Command prompt as Administrator and browse to <Analytics Plus Home>\bin\
Run the batch file 'changeHostPort.bat' with the below parameters. <Webserver port number> is 8443 by default, This is the port used to access Analytics Plus
changeHostPort.bat <Webserver port number> true
Once done, Start the Analytics Plus services under services.msc