The steps to extend a Web Application using Windows-classic authentication in Windows PowerShell is as follows:
· On the Start menu, click All Programs.
· Click Microsoft SharePoint 2010 Products.
· Click SharePoint 2010 Management Shell.
· To extend a Web Application to the same port, but with a different host header, at the Windows PowerShell command prompt, type the following command:
Get-SPWebApplication –Identity | New-SPWebApplicationExtension -Name
Where:
· is the Web application that you want to extend.
· is the name of the new IIS Web site in the Web application.
· is the host name assigned to this zone of the Web application.
· is the port on which this zone of the Web application can be accessed.
· is the zone with which this new extension is to be associated.
· is the public URL for this Web application zone.
