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Quickstart: Connect to a virtual machine using a private IP address: Azure Bastion
In this article, learn how to create an Azure Bastion host from a virtual machine and connect securely using a private IP address.
bastion
charwen
bastion
quickstart
03/11/2020
charwen

Quickstart: Connect to a virtual machine using a private IP address and Azure Bastion

This quickstart article shows you how to connect to a virtual machine using a private IP address. When you connect via Bastion, your virtual machines don't need a public IP address. The steps in this article help you deploy Bastion to your virtual network via your virtual machine in the portal. Once the service is provisioned, the RDP/SSH experience is available to all of the virtual machines in the same virtual network.

Prerequisites

  • An Azure virtual network.
  • An Azure virtual machine located in the virtual network with port 3389 open.

Example values

Name Value
Name VNet1Bastion
Region eastus
Virtual network VNet1
+ Subnet Name AzureBastionSubnet
AzureBastionSubnet addresses 10.1.254.0/27
Public IP address Create new
Public IP address name VNet1BastionPIP
Public IP address SKU Standard
Assignment Static

Create a bastion host

When you create a bastion host in the portal by using an existing virtual machine, various settings will automatically default to correspond to your virtual machine and/or virtual network.

  1. Open the Azure portal. Go to your virtual machine, then click Connect.

    virtual machine settings

  2. From the dropdown, select Bastion.

  3. On the Connect page, select Use Bastion.

    select Bastion

  4. On the Bastion page, fill out the following settings fields:

    • Name: Name the bastion host

    • Subnet: The subnet inside your virtual network to which Bastion resource will be deployed. The subnet must be created with the name AzureBastionSubnet. The name lets Azure know which subnet to deploy the Bastion resource to. This is different than a Gateway subnet. Use a subnet of at least /27 or larger (/27, /26, /25, and so on).

      • Select Manage subnet configuration, then select + Subnet.

      • On the Add subnet page, type AzureBastionSubnet.

      • Specify the address range in CIDR notation. For example, 10.1.254.0/27.

      • Select OK to create the subnet. At the top of the page, navigate back to Bastion to complete the rest of the settings.

        navigate to bastion settings

    • Public IP address: This is the public IP of the Bastion resource on which RDP/SSH will be accessed (over port 443). Create a new public IP, or use an existing one. The public IP address must be in the same region as the Bastion resource you are creating.

    • Public IP address name: The name of the public IP address resource.

  5. On the validation screen, click Create. Wait for about 5 minutes for the Bastion resource create and deploy.

    create bastion host

Connect

After Bastion has been deployed to the virtual network, the screen changes to the connect page.

  1. Type the username and password for your virtual machine. Then, select Connect.

    connect

  2. The RDP connection to this virtual machine via Bastion will open directly in the Azure portal (over HTML5) using port 443 and the Bastion service.

    RDP connect

Clean up resources

When you're done using the virtual network and the virtual machines, delete the resource group and all of the resources it contains:

  1. Enter TestRG1 in the Search box at the top of the portal and select TestRG1 from the search results.

  2. Select Delete resource group.

  3. Enter TestRG1 for TYPE THE RESOURCE GROUP NAME and select Delete.

Next steps

In this quickstart, you created a Bastion host for your virtual network, and then connected to a virtual machine securely via the Bastion host.