How to guarantee security of Entreprise Portal

The Enterprise Portal allows users to access Microsoft Dynamics AX 2009 over the Web. It is possible, without proper attention given to the security of the component parts of Enterprise Portal, to unintentionally give an attacker or malicious user access to Microsoft Dynamics AX data. This section discusses Enterprise Portal security, a process for securing Enterprise Portal, and some security best practices.
Enterprise Portal security uses a combination of features from:

• Microsoft Active Directory
• Windows SharePoint Services or Office SharePoint Server users and groups
• Microsoft Dynamics AX access control