Information
During the installation of Microsoft SharePoint, the Central Administration Web site is established on a randomly-assigned TCP port by default. Allowing a randomly-assigned default may result in use of a port which violates DoD policy or conflicts with ports already in use. Use of certain well-known ports may also result in slow operational responses or may expose the application to denial of service attacks.
Solution
1. Open the SharePoint 2010 Management Shell (Start > All Programs > Microsoft SharePoint 2010 Products > SharePoint 2010 Management Shell).
2. Change the port number to a PPSM approved port which does not conflict with existing port usage by using the following command:
-Set -SPCentralAdministration -Port <PortNumber>.
3. Press Enter to save.