Next to that role, you also need to assign the user with the Reader role on the resource group of the Azure Bastion host. Just know that you need to do this on every Azure subscription where the user need to be able to use the Azure Bastion service to connect to a VM or VMs in that subscription. Luckily, to make it all a little bit easier, you can just assign the pre-defined built-in Virtual Machine User Login role at the subscription level. The last role is only required if one or more peered VNet(s) are in use in your environment. So, like you can read above you need to make sure the user at least has read access to both the VM(s), and the peered VNet(s). So, just give users the minimum access (limited access) they need to fur fill their tasks. And also, always use the least privilege access model (least privilege principle), when granting access with RBAC. You can scope these roles at whatever level you want:Īs a best practice it is best to only apply RBAC roles on the Management Group, Subscription or Resource Group level. Reader Role on the virtual network (VNet) of the target virtual machine.If the Bastion host also needs to connect to a VM in a peered virtual network, the following role assignment is also required: Reader role on the Azure Bastion resource.Reader role on the network interface ( NIC) with private IP of the VM.When connecting to a VM using Azure Bastion a user will at least need the following role assignments: If you want to read some more about Azure RBAC, you can do so via the following Microsoft Docs link: Azure RBAC documentation With using RBAC you can for example grant a user access to a VM via Azure Bastion, but at the same time do not allow that same user to make any changes to the Azure infrastructure or to any other Azure resource in your environment. Those features can help you to for example enforce that a user logs into the Azure Portal using Multiple Factors of Authorization or that a user needs to connect from a trusted device or IP Address.īeside MFA and Conditional Access, you can also manage the access to your Azure resources, like your VMs, trough role assignments, by making use of Azure RBAC. When using Azure Bastion in a production environment it is best to enhance the user(s) security by using features like Multi-Factor Authentication (MFA) and Conditional Access. If you want to know how you can deploy Azure Bastion and all associated resources via the use of an Azure PowerShell script, you can look at this blog post. If you want to read some more about Azure Bastion, you can do so via the following Microsoft Docs link: Azure Bastion documentation When you use Azure Bastion, your VMs do not need a Public IP Address (PIP), agent or special client software to be able to connect to them. It allows you to securely connect to your Azure virtual machines (VMs) via RDP or SSH and this directly from the Azure portal over SSL. This blog post will show you which minimum Azure Role-Based Access Control (Azure RBAC) roles are required to access a virtual machine (VM) with the use of Azure Bastion.Īzure Bastion is an Azure PaaS service that you provision inside a virtual network (VNet), recommendable the HUB VNet.
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