The Self-Service Portal provides web-based access to the features of System Center 2012 – Service Manager. This section describes how you can deploy the Self-Service Portal, and it includes information for configuring
Secure Sockets Layer (SSL).
The Self-Service Portal in System Center 2012 – Service Manager is a SharePoint website that is accompanied by a set of Microsoft Silverlight applications. The Self-Service Portal consists of two elements:
1-SharePoint website
2- web content server. "The one that you are seeing now"
The SharePoint website is accompanied by a set of applications that are built with Silverlight. The SharePoint environment provides a foundation on which the portal can be customized. It also provides a set of building blocks for extending the features
that users can access through a web browser.
The web content server is a Web Application that forms the interface between the Silverlight application and the Service Manager database.
The web content server provides a path for data from the Service Manager database to the Silverlight-based application that is running in the browser. A basic Self-Service Portal setup is shown in the following diagram.

Please check this link and make sure to follow the steps
http://technet.microsoft.com/en-us/library/hh914195.aspx
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