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Azure Bastion Standard vs Developer for Private Virtual Machines
Question details
The user needs to evaluate the differences between Azure Bastion Standard and Developer SKUs for connecting to a private virtual machine, specifically regarding VPN and split-tunneling compatibility.
- Product
- Microsoft Azure
- Device & OS
- not provided
- Scenario
- Connecting to a virtual machine without public internet access using Azure Bastion.
- Observed behavior
- Bastion Developer successfully connects, but the Standard SKU fails to meet the user's specific VPN and split-tunneling configuration needs.
Ensure you have Contributor access to the Azure subscription and the specific Virtual Network (VNet) where you intend to deploy or configure Azure Bastion.
Consult Microsoft Azure Q&A for Network Architecture Evaluation
Since Azure Bastion SKU behavior heavily relies on specific VNet, subnet, and VPN configurations, consulting an Azure networking specialist is highly recommended.
The Standard SKU has distinct architectural requirements compared to the Developer SKU, particularly regarding routing, subnetting, and control plane access. A custom VPN design with forced tunneling can inadvertently block necessary management traffic for the Standard SKU.
Document your current Virtual Network setup, subnet topology, VPN gateway configuration, and any specific split-tunneling routing rules.
Navigate to the official Microsoft Q&A platform and select the Azure tag to ensure your question reaches the right experts.
Post your configuration details and describe how Bastion Developer succeeds while Standard fails. An Azure networking specialist can then evaluate your private connectivity design.
Verify Subnet and Routing Requirements for Bastion Standard
The Standard SKU has specific subnet size and routing requirements that differ from the Developer SKU, which might conflict with your current VPN setup.
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Frequently Asked Questions
What is the primary difference between Azure Bastion Developer and Standard?
Bastion Developer is a lightweight, low-cost SKU designed for basic, occasional VM access without needing a dedicated subnet. The Standard SKU provides enterprise-level features like host scaling, native client support, and IP-based connections, but requires a dedicated AzureBastionSubnet and specific routing.
Why would split-tunneling affect Azure Bastion Standard but not Developer?
Bastion Standard requires a dedicated subnet with specific routing to Azure's management control plane. If a split-tunneling VPN forces this management traffic through an on-premises network or blocks it, the Bastion host may fail to provision or operate correctly. Developer operates differently and is less impacted by VNet-level routing rules.
Can I upgrade from Bastion Developer directly to Standard?
No, you cannot upgrade directly from the Developer SKU to the Standard SKU. You must delete the Developer instance and deploy a new Bastion host using the Standard SKU with a properly configured AzureBastionSubnet.
