SPWeb.AnonymousPermMask64 Property
Gets or sets the base permissions for anonymous users of the website. (Read-only in sandboxed solutions.)
Assembly: Microsoft.SharePoint (in Microsoft.SharePoint.dll)
Available in Sandboxed Solutions: Yes
Available in SharePoint Online
Property Value
Type: Microsoft.SharePoint.SPBasePermissionsAn SPBasePermissions value that specifies permissions for the website.