LayoutsPageBase class
SharePoint 2013
Represents an application page to which access can be limited to users that possess certain rights.
Namespace:
Microsoft.SharePoint.WebControls
Assembly: Microsoft.SharePoint (in Microsoft.SharePoint.dll)
In general, use LayoutsPageBase as a base class for pages that should only be accessible to authenticated users with certain rights. For pages to which even unauthenticated users should have access, use the parent class UnsecuredLayoutsPageBase.