In my previous entry I told you how I could manage the entire portal from the Control Panel.
In this entry I wanted to show you how you can configure the preferences of your portal.
There is a file called portal.properties with all the parameters you can configure for your portal. Please be advised, you should not modify this file. Instead, create a portal-ext.properties file and you can overwrite these properties there (More information about this here).
Have a look at this file to see everything you can do. You will probably find this page very useful:www.liferay.com/web/guest/community/wiki/-/wiki/Main/Portal+Properties+5.1.1