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GlebPestun-7025 asked SaiKishor-MSFT commented

Microsoft Virtual WAN question

Hi Experts,

I want to design the following: a Virtual WAN deployed with 2 HUBs in 2 x different regions. Both regions will have a similar topology - VNETs, Branches (via Site 2 Site VPNs) and Datacenter connectivity via Encryption enabled Express routes attached to the hubs. The concern I have is to be able to secure the traffic within the HUB (have a secured HUB) and preserve inter-region communication between the hubs. Is that possible to achieve?

Thanks

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SaiKishor-MSFT answered

@GlebPestun-7025 Thank you for reaching out to Microsoft Q&A.

I understand that you want to have a Virtual Hub setup in 2 different Azure regions and preserve inter region connectivity along with securing the traffic within the Hub. Based on your need, the following topology will fit your needs:

131400-image.png

Here are more details on Security and Policy Control of Virtual WAN Hub which is achieved by adding a Firewall in the Hub as shown in the picture. Hope this helps.

Please let us know if you have any further questions and we will be glad to assist you further. Thank you!

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GlebPestun-7025 answered SaiKishor-MSFT commented

Thanks. There are few notes however that state that traffic basically cannot be secured inter HUB between regions for specific cases. I also could not find VNET to VNET between HUBs in different regions traffic flow support. Can you comment on this please?

"
Inter-hub processing of traffic via firewall is currently not supported. Traffic between hubs will be routed to the proper branch within the secured virtual hub, however traffic will bypass the Azure Firewall in each hub."

"Inter-hub with firewall is currently not supported. Traffic between hubs will move directly bypassing the Azure Firewall in each hub. Traffic via a connection destined to a virtual network in the same region will be processed by the Azure Firewall in the secured hub."

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@GlebPestun-7025 Yes, at the moment Inter-hub traffic processing via Firewall is not supported but this is in our Road Map. Vnet to Vnet between Hubs is possible but it does not pass through the firewall. Please let mw know if you have any further questions and we will be glad to answer the same. Thank you!

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GlebPestun-7025 avatar image GlebPestun-7025 SaiKishor-MSFT ·

Thanks Sir, just to clarify is inter-hub comms via Firwall between regions is also on your Road Map? Can you throw a rough ETA on this feature?

Thanks

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SaiKishor-MSFT avatar image SaiKishor-MSFT GlebPestun-7025 ·

@GlebPestun-7025 Inter Hubs between regions is still considered Inter-Hub. Unfortunately, we are not able to share the timeline at the moment. Please let us know if you have other questions and we will gladly assist further. Thank you!

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