Last Update: Sep 04, 2024 | Published: Mar 26, 2015
In this article I am going to show you step-by-step instructions on how to build a hybrid app collection in Azure RemoteApp.
The benefit of a hybrid app collection is that it allows you to enable users to log into Azure-based and Azure-managed RDS session hosts, while still using company owned servers and services. The below illustration depicts such a scenario:
The ability to integrate a hybrid app collection so deeply with an Active Directory and with customer services is what makes this solution so interesting to me. It takes very new technologies and concepts and brings them within the scope of technologies that we have been using for up to 15 years. It can also make legacy services accessible to users all over the world in a very secure manner.
The first step of the process is to create a custom template, which you can learn how to do in my article, How to Create an Azure RemoteApp Template. This allows you to publish applications of your own in the Azure cloud, subject to technical and licensing requirements.
This is a subject that’s bigger than the scope of this guide. You have multiple options including:
The good news is that if you have configured Office 365, then you probably already know how to do this stuff. Make sure that the UPN of your users in Active Directory (example: [email protected] in a domain called petri.com) matches the UPN in AAD. If you don’t do this, then users will not be able to sign into RemoteApp and will get an unambiguous “resources not available” error.
Log into the Azure management portal and browse to RemoteApp and click Create A RemoteApp Collection. A dialog appears:
The session hosts of a hybrid app collection will be connected to an Azure virtual network. You will create one of these with a gateway for VPN connectivity. Browse into your new app collection, and you should be greeted with the quick start instructions. Click the blue cloud with a lightning bolt in the top navigation bar. Click Link A Virtual Network, where you can create a new RemoteApp virtual network or reuse an existing RemoteApp virtual network.
Click Create A New RemoteApp Virtual Network, name it, and select a region. In the Network Address Spaces screen, you need to enter the addresses of two networks:
The next screen is very important and must be completed correctly. Three pieces of information are required:
The third item is whether you want to create a static or a dynamic gateway. This will be determined by:
Note: An Azure virtual network requires a dynamic gateway for a VNET to VNET VPN — have you figured out how that could make for an interesting solution?
When you finish the wizard, a little box beside Link A Virtual Network indicates that a job is running behind the scenes to create the virtual network. Wait until this is completed.
A VPN shared-secret key is created for the gateway of the RemoteApp virtual network. Click Get Key to copy this key and use it to create a VPN connection between your server network and the new RemoteApp app collection. Consult your network device manufacturer’s instructions on how to complete this step.
Open Active Directory Users and Computers to manage your Active Directory (not AAD). Enable the Advanced view and create an OU for RemoteApp session hosts. Azure RemoteApp will join the Azure-based virtual session hosts to your domain and place the computer objects in this OU. In my example, I created a sub-OU called RemoteApp in a root OU called Petri, in a domain called petri.com.
To enable this, you will need a service account. Create a normal and non-administrative user in Active Directory. In my example, I created a user called RemoteApp, with a UPN of [email protected]. Open the properties of the RemoteApp OU, select Security, and click Advanced.
Click Select Principal and select the new service account, which is [email protected] in my example. Ensure that any permission change will effect this object (the OU) and all descendent objects. Next, add the Create Computer Objects and Delete Computer Objects rights to the account before saving all of the changes.