It's not full, however, for example, you cannot copy content inside, due to the RDP not being on the browser. It will let you access the virtual machines and have a full RDP experience. Once access is granted, authenticate to Azure Bastion as usual, either in Azure portal or with a native client.It's like an RDP gateway.Ignore all the errors saying the IP address prerequisite isn't met. Request access to connect to the VM using JIT VM Access (as shown in the following screenshot).Once you've done so, here's how to combine the feature with Azure Bastion: Clever, eh?Īs long as (a) the Windows Server or Linux VM has a vNIC-associated NSG, and (b) the VMs are enrolled in Microsoft Defender for Cloud Standard, you can set them up for JIT VM Access. Once the time window expires, Microsoft Defender for Cloud closes the NSG rule. Just-in-Time VM Access (JIT VM Access) is a feature of Microsoft Defender for Cloud Standard that locks down the administrative ports (in our case, TCP 3389, the default RDP port) until you make an explicit connection request.Īfter the connection request is approved, the virtual network interface card (vNIC)'s network security group (NSG) gets a time-limited Allow rule that enables the connection. We'll finish up with a technique to further improve the security of your Azure VM environment. Managing Bastion connections in the Azure portal Combine Azure Bastion with Just-in-Time VM Access Bastion also allows you to administrate the shared text clipboard feature, although I personally find it really handy for passing PowerShell into my target VM. When you're finished with your remote administration session, you simply close the browser tab.Īs you can see in the screenshot below, the Azure portal shows you who's connected to the Bastion, and you can force-disconnect them. Managing the Azure BastionĪs I mentioned earlier, there really isn't much to Azure Bastion. The az network bastion rdp command has a -configure flag that opens the standard Remote Desktop Connection client, from which you can set screen resolution and all the usual options. The Remote Desktop session will default to full screen and stretch across all your monitors this isn't optimal, at least not for me. Make the RDP connection by running the following command:Īz network bastion rdp -name -resource-group -target-resource-id.Obtain the resource ID of your target VM by running the following command:Īz vm show –name -resource-group -query id –output tsv.Install Azure CLI, open a command or PowerShell prompt, and run az login to get connected to your target Azure subscription.Here's the step-by-step on using the native Microsoft Remote Desktop Connection client with Bastion: However, nowadays, you can use the Azure command-line interface (CLI) to make Bastion remote administration connections using native RDP and SSH client applications. Historically, you had to tunnel through Azure Bastion to reach your Azure VMs using an HTML5-capable web browser, as shown in the following screenshot.Ĭonnecting to an Azure VM via Bastion in the Azure portalīe sure to disable your browser's popup blocker for, or you'll never complete the connection! I'm grateful the option now exists to save customers' money. On the other hand, you can use a Bastion deployed to a hub VNet to reach Linux and Windows Server VMs in peered spoke VNets (central VNet that serves as a gateway for other VNets ). Sadly, the Bastion can't be paused, so you're paying for the service 24 hours a day, regardless of when or how much you use it. Here's one of Microsoft’s quickstart Bicep templates, which creates an Azure Bastion instance in an Azure VNet.Īfter the Bastion is up and running, that's really it. Of course, in the real world, you'll want to deploy Azure Bastion via infrastructure-as-code (IaC). Hub and spoke VNet architecture with Azure BastionĪlso, remember that you'll only be able to deploy Bastion to a VNet (and associated VMs) in the same Azure region.
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