This topic briefly describes some of the security issues you should consider when you develop an extranet for SharePoint. SharePoint has extensive documentation on designing and deploying extranets. For more information, see Extranet Resource Center for SharePoint Products and Technologies on TechNet.

This topic discusses the following subjects:

• Planning the Extranet. This topic discusses some basic decisions you should make before you begin developing an extranet.
• How to: Lock Down Identity Viewing for a Site. This topic includes a procedure that shows how to prevent unauthorized users from seeing the People.aspx page.
• How to: Expose a SharePoint Application to the Extranet and Use Forms-Based Authentication. This topic includes a procedure that shows how to extend a SharePoint application to the extranet and enable the application to use forms-based authentication.
• Using the User Profile Store. This topic discusses how the Partner Portal application creates user profiles and associates them with partner IDs.

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