Apply route filtering to Route VPN gateway

Question

Hi,

We do use VPN Gateway to establish S2S connections with cloud providers and on-prem.
One of the S2S VPN is between a cloud provider and Azure, learning BGP routes.
Second is a S2S VPN between on-prem and Azure using now static but we want to use BGP as well. We noticed that routes learned are advertised are advertised to the other cloud provider which I believe it´s default behaviour. However, we want to apply route-filtering to avoid those routes learned from on-prem to be advertised to the other cloud provider.

Is there any way to achieve this?

Thanks in advance!

Answer 1

Hi Kuba

Welcome to the Microsoft Q&A Platform. Thank you for reaching out & I hope you are doing well.

NOTE: At the moment, Azure VPN Gateway does not support BGP route filtering.

• When configuring BGP on your Azure VPN Gateway, ensure that you are aware of the routes being advertised. While Azure does not allow you to filter routes directly, you can manage the routes that you're on-premises network sends to Azure.

If you require more advanced routing capabilities, consider deploying a Network Virtual Appliance (NVA) in Azure. NVAs can provide more granular control over routing and can be configured to filter routes based on your requirements but it may involve additional costs and complexity.

If you wish you may upvote the feedback in the below forum requesting this feature. All the feedback you share in these forums will be monitored and reviewed by the Microsoft engineering teams responsible for building Azure.

Feedback forum: https://feedback.azure.com/d365community/idea/ef6fe1c6-8426-ec11-b6e6-000d3a4f0789

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