Extend web application in SharePoint 2013 (using PowerShell and Central Administration)

This SharePoint 2013 tutorial, we will discuss how to extend web application in SharePoint 2013 using PowerShell and using SharePoint 2013 central administration.

Why/when should we extend a SharePoint 2013 Web Application?

In any SharePoint web application, we could see 2 types of users Internal or External. If we want to collaborate on the SharePoint site with both Internal and External users the best approach from Microsoft is Extend the Web Application.

Once we extend the web application we can configure a different set of permissions to that users. However, both web applications communicate the same Content Database.

Note: When you extend the Web Application SharePoint creates only a new IIS site in Application Pool and connects with the same content database.

Extend web application SharePoint 2013

In an organization, we have 2 verticals Finance and BPO. If we need to share the same SharePoint web application between verticals without breaking the permissions! The best way is Extending Web Application.

In this article, we are going to learn how to extend a web application in both

• SharePoint Central Administration
• PowerShell Commands

Extend web application in SharePoint 2013 using Central Administration:

Follow the below steps to extend a web application in SharePoint 2013 through Central Administration.

Log-on to Application Server with a FARM administrator account. Select the required web application under Manage Web Applications. From SharePoint Central Administration -> Application Management -> Manage Web Applications.

Click on Extend option as part ribbon control to extend the web application

Provide all the details of a new extending web application in the model dialogue window.

Note: In this model dialogue window do can’t see the below option which you see while creating a new web application as they carry forward from the original Web Application.

• Database server name
• Failover DB server name
• Application services

Once you provide all the details click on OK at the end of model dialogue window to create the extended web application.

Extend web application in SharePoint 2013 using PowerShell

Follow the below steps to extend the SharePoint 2013 web application using PowerShell commands.

Log-On to the Application server with a FARM administrator account

Open SharePoint 2013 Management Shell with a FARM administrator account

Run the below command to extend the desired web application

Syntax:

$ap = New-SPAuthenticationProvider -ASPNETRoleProviderName roleprovidername -ASPNETMembershipProvider membershipprovidername

Get-SPWebApplication -Identity <Existing Web Application> | New-SPWebApplicationExtension -Name <Web Application Name> -HostHeader <HostHeader> -Zone <Zone> -URL <URL> -Port <Port> -AuthenticationProvider $ap

Parameters:
<Name> is the name of the new IIS web site in the web application. – Mandatory
<HostHeader> is the hostname assigned to this zone of the web application. – Optional
<Zone> is the zone with which this new extension is to be associated. – Mandatory
<URL> is the public URL for this web application zone. – Mandatory
<Port> is the port on which this zone of the web application can be accessed. – Mandatory

Examples:

$ap = New-SPAuthenticationProvider -ASPNETRoleProviderName roleprovidername -ASPNETMembershipProvider membershipprovidername

Get-SPWebApplication -Identity http://contoso.sales.com | New-SPWebApplicationExtension -Name IntranetSite -Zone Intranet -URL http://intranet.conoso.sales.com -Port 9876 -AuthenticationProvider $ap

You may like following SharePoint web application tutorials:

• Delete Hidden Web Application in SharePoint 2013 using PowerShell
• Manage Web Application Settings in SharePoint 2013
• Create SharePoint site programmatically
• SharePoint content database tutorial

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Enjoy administration in SharePoint 2013 !!!