Client connection to Azure Postgres flexible server over point-to-site VPN times out

Question

Hi there,

I have the following setup:

• Azure Postgres flexible server with VNET injection and no public endpoint. Injected into "alpha" vnet
• Point-to-site VPN that connects to the "beta" vnet
• VNET peering configured between "alpha" and "beta"
• DNS configuration that was setup via this answer: https://learn.microsoft.com/en-us/answers/questions/1295914/azure-database-for-postgresql-flexible-server-priv?page=1&orderby=Helpful#answers

When I try to connect to the Postgres server from a VM running in the VNET using psql, I'm able to connect.

However, when I try to connect from my laptop with the VPN running, the connection times out. nslookup resolves DNS correctly (the results are the same as they are in the VM). Here's the psql output from my laptop:

psql: error: connection to server at "

Answer 1

@Alex L

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

I understand that you would like to access your VNET injected Azure Postgres flexible server from P2S Clients.

• May I ask if a VM in "beta" VNet is able to access the VNET injected Azure Postgres flexible server in "alpha" VNET?
• Also, can you confirm if Gateway Transit is enabled between the VPN VNET and the Azure Postgres flexible server injected VNET?
  • Refer : Configure VPN gateway transit for virtual network peering

You informed Gateway transit was not enabled and also confirmed doing this resolved the issue.

Please let us know if we can be of any further assistance here.

Thanks,

Kapil

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