Changing J2ee Engine (Portal) Ports:
Change the default ports of a j2ee system.
1. Login to the Visual Admin.
2. Go to the under Dispatcher à Services à HTTP Provider. 
3. Change the ports in the ports property.
4. Restart the J2EE Dispatcher .
This changes the original ports given at the installation. You can change the http and https ports.
To change the SLD Ports.
1. In the visual admin go to Server à Services à SLD Data Suppliers.
2. Go the Http Settings change the port and save it. 
3. Change to other tab CM Client Generation Settings.
4. Change the Port number and check CM Client test. 